If that whole thing about "more human sides" is true, we'll probably never get a companion who's more anti-mage than Fenris.
I have a strong feeling that the fandom doesn't know the difference between "Mage Hater" and "Anti-Mage Freedom". Apparently, if someone doesn't support the full and unfettered freedom of the mages, they are horrible people and hate mages.
Never mind the fact that of all companions we have come across there have been a grand total of FIVE Mage Freedom companions. Two of which are Dalish so their version of Mage Freedom is: "Leave us alone, shem". The others? Morrigan, Isabela, and Anders. That's it.
Wynne? Pro-Circle. Malcolm raised his kids too thoroughly, they know the dangers mages can succumb to: Carver and Bethany? Pro-Circle. Alistair? Doesn't trust mages who live outside the Circle farther than he can throw them (not just Morrigan clashing either, he is against all things Jowan). Sten? Super Anti-mage because... QUN. He may not discuss it with the Warden, but QUN IS QUN. He was very QUN. Leliana is working for The Divine soooo SUPER PRO-CIRCLE. We all know where Fenris falls. Aveline is pro anything resembling law and order so she is Pro-Circle with the exception of the Gallows.
So, unless you hate every single one of those companions... I propose there might be other reasons why someone dislikes a Pro-Circle character...
Wynne joins the rebellion.
Both Warden siblings support the mages in The Last Straw, and CircleBethany says that the Maker has called her to help free her fellow mages.
Alistair either declares the Circle free or hides fleeing apostates.
Leliana helps out the protagonists in Asunder against the templars.
So only Sten, Aveline and Fenris are really against mage freedom.