No, we won’t. (Even if singular “they” becomes ubiquitous, which is by no means guaranteed). You was once exclusively plural. It is now usually singular, but w

No, we won’t. (Even if singular “they” becomes ubiquitous, which is by no means guaranteed). You was once exclusively plural. It is now usually singular, but we still use plural verb forms with it (“you are”, etc.). Conversely with on in French, which was once exclusively singular but now means “we” in colloquial speech yet still takes singular verb forms (“on est français” = “we are French”. “il est français” = “he is French”.)