Respec, I mean, it's 2023 and who out there can be bothered to learn D&D rules? It is what it is and I don't really mind too much. But respec without any kind of limitation is probably a bit over the top in terms of opening the door for all kinds of ridiculous cheese. And we know what the masses will say when they realise that hard encounters are trivial with a bit of cheese. "That not fair, I struggled so hard, that is cheating, fix and nerf now!!!11", in my experience. Also, that achievement for a level 12 multi with 1 of each class is suddenly not that hard to get, is it?
Companion respec, sure, why not, but I'm intensely not a fan of being able to redistribute companion stats or starting class. We have a story that has to make sense. Once we start opening the door for that whole "but can't we just pretend" stuff, we might as well also just pretend to always roll natural 20's. I guess I'd be okay with full companion respec in story mode.
Multiclass made easier, frankly to be expected, but it is one of those areas where Larian has to be super careful to not overdo it. If you need to add salt to your dish and all you have is a shovel then it is better to refrain. But it is hard to comment on whether Larian messed this one up without more info.