Well, in that case we are complaining about different things that falls under same topic ...
Feel free to keep them separate.

Yes, it's completely different. I don't know, how you would separate companion decisions from how your main character inlfuences the world, but the point is, that the other companions make decisions based on what they experienced with your character ON THEIR OWN. Wyll doesn't even have that little bit of freedom, so if you want to make the companions totally random decisions, feel free to make a thread about it (though I do think there should be some triggers for them to go in one or the other direction), but this is about giving the one companion out of the origins having the least agency for himself and the least content a bit more.
I fear that storystuff has been sidelined due to the loud complaints and crys about and for kisses and hugs and romance stuff (which gave us Halsin - a companion totally void of anything, but romance stuff in act 3) on every platforms.
But I find it a bit sad, that the one character, that is the most tied to not only this story but also Descend to Avernus through his father gets sidelined so much. If you go through this thread it's not only about the decisions anymore, but a lot of stuff, that could make Wyll a bit more on par with the other characters.
I mean, people don't seem to use him a lot, because of his lack of content - like you said in another thread. You obviously didn't even know, he could help save Karlach and that those two can become an implied couple if you don't romance either of them.
I also read, that people call him stupid for making the deal with Mizora and not making his own decisions: They obviously didn't even have him long enough with them to hear his backstory, otherwise they would have known, he was a teenager, when Mizora tricked him into the pact and the decision problem, as was discussed a lot, is due to him being the least developed due to rewrites. If left alone without Tav, Wyll, if he survives the initial goblin attack to the grove, is the companion most likely to reach BG in one piece - probably at least teaming up with Karlach, since those two will always come to terms. If you listen to what he says in banter and look at his approvals, he would have nearly always have made the sensible decisions, most likely to keep you alive (the only time, he would have not done it, migh thave been the goblin camp, which is not that hard to beat)