I see problems. Gregoir deciding that he can lock the tower doors and lock every mage inside with demons is a problem. That he can call for an RoA is a problem. That he can demand mages be made tranquil or executed is a problem. That he can physically abuse mages and not be removed from his position is a problem. That he could overrule Irving is a problem. The templars should have no power to do these things in a circle that is supposed to be autonomous. Power should not be shared. The templars need to know their role and stay in their lane as guards.
Physically abuse? When, in that one comic?
He can't make anyone Tranquil except with Irving's concurrence, which he had for Jowan.
And in the case of ROA, I can see why he did it, even though I don't agree with his choice. He followed the rules and asked for the GC's permission, instead of going in there gung ho to slaughter everyone.
Which mages has he executed?