Stop taking this to its extremes.
Balancemen is wrong. So is monte cook.
Yes a PoE like situation wehre balance saps the fun out of a product is awfull. Howver 3.5 caster dominance is also complete garbage and most of you that played BG1 and 2 havent actually seen the worst of it
PoE 2 allows for many OP multiclass options. That is the optimal case and not one class being stricly stronger than the others as some people here are thinking.
So does Kingmaker, where casters are actually pretty weak compared to martials.