Shouldnt we first know the reason he is alive, before we judge it as stupid?

I have not read the comics. But as I understand it Minsc & Boo were turned to stone at some point after BG2. Then healed back to normal a little bit before Descent Into Avernus I believe(not sure how/why/when exactly).
Personally I don't have a problem with this. It is 100% possible to happen in this universe...hell we fight Drow that have been turned to stone for longer than Minsc & Boo in the Spectator fight in the UD.
No, it's much worse than this. The actual Minsc from the original games is dead. In Baldur's Gate, a statue was erected to celebrate Minsc as one of the heroes of the city. A surge of wild magic in the area of the statue caused the statue to come to life. *That's* who the current Minsc is! Seriously stupid.
Ok yeah I completely didn't understand that correctly. I really would have been fine with what I said, but I agree the reality of the situation is off.
Idk, a statue brought to life(stone to flesh) with wild magic is effectively a flesh golem. It can't have Minsc's memories or even part of his "soul" attached. I can't really see it being a person, closer to something like a Warforged maybe if it is suppose to be self aware, but it is in no way Minsc.
I suppose the point could be that it thinks it is Minsc so hard that it is? I'm not really buying that.