I feel loved.

They probably are. The problem is that the southern mages are not even that, and I think a system that treats mages as subhuman without clear and present evidence that it is necessary needs to go.
Instead, you endorse a system that only works because everyone else is indisputably treated subhuman and it's entirely unnecessary?
Bottom line, I can't agree with the position that everything non-magical people have, their livelihood, their homes, their families, their lives is worth risking just so mages don't feel restricted in their five star prisons where they already have acess to luxuries most people don't such as an education.
Vivienne has so many great lines on the subject. I don't think most people who criticize her have even bothered to explore them. Diasagreeing with her opinion is one thing, but I don't know how anyone can think she's insincere when you can feel the condemnation dripping from every word. Her voice actress does an amazing job conveying how much genuine anger and scorn she has for the rebels.
And BTW, that doesn't make the mage "plight" all that unique. People with power abusing it happens all over the world. Tevinter for instance.
"Every Circle was different, their templars were different, their politics unique... and every person within each tower had an experience of Circle life unique to themselves. Some people suffered, and some were content. Some were cruel, some compassionate, and some indifferent.
The same is true of people everywhere, in all circumstances, whether they are mages or not."
See what I mean? Viv has a line for everything.

Lambert restricting the mages could also have to do something with a serial killer running rampant in the White Spire and a mage from that circle trying to assassinate the Divine...
QFT.
Asunder makes it clear that these are new restrictions, and one of the reasons for the unrest in the tower.
Since there's absolutely no evidence that the white chantry circles make a society any safer: no
We only have this quote... "Some are saying, however, that this needs to change. They remind the world that mages are not controlled by templars everywhere in Thedas: not among the Rivaini witches, the Dalish keepers or the Tevinter magisters… and those societies are, arguably, no worse off."
Here's a quote from David Gaider on the subject:
"They exist without controlling mages. Meaning that if a mage turns into an abomination and causes destruction, or otherwise causes problems, they simply suffer and deal with it. I don't think it's a stretch to suggest that not everyone is going to consider that a viable alternative."
Couldn't say it better myself.
And there's Leliana's epilogue, of course.
For the moment.
Moments aren't very long.
And a Dalish clan that summoned Imshael in TME, they were wiped out in the end.
Not only did Ishmael wipe them out, he also went on to cultivate a nice red lyrium farm for Corypheus.
The Uldred incident only happened because of the Chantry and the templars, it never would have happened in Denerim. Uldred cuts a deal with Loghain for mages in Ferelden to be free. Therefore it's safe to assume that nobody would have died if there were no circles. But instead who knows how many of innocent mages died because the templars didn't let anyone out. But I guess their lives don't count...
Who knows how many innocent templars died because they were locked away to prevent any threats from escaping?
Who knows how many innocent people were protected because the templars didn't let anyone out?
But I guess their lives don't count either?
I seriously doubt mages would enjoy unprecedented acceptance throughout Thedas if they were turning into abominations left and right.
For the moment
I don't see your point. The mad Florian's rule had brought the Orleasian empire to the brink of collapse. Gaspard put his country in more danger than ever in an effort to seize power for himself. A bad non-mage ruler can do just as much damage as bad mage rulers. And unlike some other countries Tevinter didn't have a civil war in the last years...
The problem with this reasoning is that everything a normal ruler can do, a mage ruler can do as well. Except the mage ruler can also blood magic away anyone who refuses to follow them and set demons on their opposition in addition to the mundane ways of keeping control of their empire.