How come there is so many people bitching about this not making any sense? Are you all fucking insane? Did you forget the world this is going on? Do you not understand the story so far? Seriously, what the fuck?
Yes I get that it is getting repetitive, I agree with that much, but that is about it. There isn't anything else objectively wrong with how the characters are behaving in regards to Will, it actually makes perfect sense. Of course many mages from the tower aren't going to accept Will, even if he has proven his value. Will is essentially a threat to mages and the very basis that their power, both magical and political, is built on.
The author have made it EXTRA FUCKING CLEAR from the very beginning that this world is full of bigotry and racism, and now you expect the higher ups to just shut the fuck up and accept a random bastard that can't even use magic as they know it? How do you think it would look for those other high mages if Will were to just surpass them with ease in combat? Surely he can, this much is obvious, so do you all seriously expect all of them to just bend the knee and accept the humiliation?
They are fucking assholes for sure, but no, this is not a problem of "the author not applying logic", as someone else commented, it is just a severe case of greedy, pride, racism and bigotry, and if it wasn't portrayed properly it would have been criticized just as much.
And for the ones criticizing Elfaria's actions in this chapter, she might be powerful but she is still a 16yo among (mostly) adults, which are likely just as powerful, if not more than her. She has been in that role for just a few years and has no real allies inside the tower from what we have seen, perhaps besides that maid or whatever. She can't just say "fuck it all" and try to attack them, and I'm gonna take a guess and say that the "king" is not king for no reason.
Being hostile might also cause even more problems to Will, so maybe consider that.
Perhaps if she wasn't pretty much a hikikomori she could have built some political power for herself, but now it is a bit too late for that.
But what baffles me the most, although I believe many of those comments are half joking, but why the fuck would he look into leaving and/or joining a different school or organization? The sole reason he is ascending the tower is to fulfill his promise with Elfaria, he is not looking for renown or anything else, he just wants to be by her side, and like I mentioned before she is likely "trapped" in her position for the time being, and also waiting for Will since he hasn't given up yet.