I disagree. I think Alain is the only one that can be said of.
Do you want to go case by case?
lol. I'm sure we can. Bear in mind that most of the blood mages we meet in the game are not actually from Kirkwall, until Act 3.
Now I was being silly but let's be fair. We'll hold templars and mages to the same standard. Meaning templars and mages with actual names will be the ones used, and not the random mage or templars we fight, then we'd both have quite a bit of cannon fodder to supply our argument. 
But let's limit it to Circle mages who were actually part of Kirkwall's circle, and not say Hadriana who was a magister's apprentice. I'll go act by act with confirmed blood mages and their personal circumstance. Not just mages who are rogue or are apostates like that mage among the raiders in Act 2. They're confirmed as using blood magic. If I miss any, feel free to correct me.
Act 1: Four or five confirmed blood mages, none of them actually from Kirkwall.
- Thrasks's daughter isn't a confirmed blood mage, but she was driven to abominationhood by desperation because of slavers.
- Idunna wasn't part of the Circle, she came with Tahrone.
- Tahrone.
- Decimus and Grace came from Starkhaven and are genuine blood mages, so they count as people not driven by desperation.
- Quentin has been driven mad by grief over the death of his wife, but was never part of Kirkwall's Circle
- Merrill, but also not part of the Circle, and the most she'll do at you is make frowny faces.
Act 2: Only two more confirmed blood mages than Act 1, and again not from Kirkwall.
- We meet Quentin for real after he kills Hawke's mother.
- Gaspard Dupuis, Quentin's apprentice, also not a member of Kirkwall's circle.
- Hadriana comes in from Tevinter. Actual blood mage but not part of Kirkwall's circle.
- We find out that Meredith has either tranquilized or executed three of Grace's party at random as an example to other mages.
- Mage among the raiders. We know he's a criminal but he's never seen using blood magic.
So, after two acts, which covers 5 years, we have only five or six truly confirmed blood mages, and none of them are part of Kirkwall's circle. Then we get to Act 3, where Meredith has seized political power and is keeping the city from running itself and is being driven mad by the idol.
Act 3: 1 genuine bad mage, Grace, 1 mage who is debatable, Orsino, three mages driven mad by conditions in the circle, one mage who is desperate, Alain, and one idiot who never practiced blood magic or became an abomination.
- Thrask's rebellion. Filled with mages and templars who sought to depose Meredith due to her unlawful rule. Known blood mages in it, Grace and Alain. Grace is nuts and makes no sense story wise, but is an example of a mage going bad for....reasons and Alain has been badly abused by the templars and wanted to defend himself. At this point they both count as part of Kirkwall's circle. 1 bad mage, 1 mage driven by desperation.
- That elven escaped mage who went to the alienage. He was driven absolutely nuts by his treatment in the Circle, like being ripped from his wife and taken from his home in chains. His psyche shattered by conditions in the Circle.
- Evelina turned herself into the Circle in exchange for the orphans she was raising to receive aid. The orphans were ignored and she turned into an abomination trying to help them. She cared for these Ferelden orphans when no one else would, including the Chantry. Yet another mage who's psyche is essentially destroyed by conditions in the Circle.
- That one mage who's name I can't remember who escaped the Circle to spend the night with a girl. Absolute idiot but not a blood mage or abomination. Simply a stupid man-child who was denied having a relationship with girls during his stay in the Circle.
- Orsino, who claims to never practiced blood magic until the Circle itself was being annulled. This is debatable, but he also has no reason to lie at this point either.
- The blood mages in the annulment are forced into die, or die situation and chose to fight back however they could. If the Champion sides with the mages, there are a lot less blood mages. One confirmed blood mage at the docks that fights no matter who Hawke sides with.
- Denarius, the Tevinter Magister
Over the course of seven years in-game, we have truly only two or three mages tops who are confirmed blood mages who are from Kirkwall who's actions aren't necessarily also involved with the templars treatment of them.
Whereas when it comes to templars who have been given names we have,
- Kerras
- Thrask
- Alric
- Meredith
- Kerran
- Cullen
- Metten
- Samson
- Emerick
- Possibly Carver
4/9 templars, 5/10 if Carver is a templar, who aren't that bad and part of the problem and increasing tensions in the Circle itself.
Mages as part of the Circle.
- Possibly Bethany
- Orsino
- Grace
- Alain
- Evelina
- Huon (the elf, I think)
- The idiot who wanted the night with a girl whose name I can't remember
- The alchemist
- Decimus (who barely counts since he was from Starkhaven, but I'm including him since he's in the game and was part of a circle)
5/8 mages (5/9 if Bethany is in the Circle) arguably negatively influenced by conditions in the circle, with only 2/5 confirmed bad because of their own choices leaving three who were driven mad by desperation or how they were treated.
When it comes down to it, name for name, templar for mage, it's roughly equal in how crappy it is.