I don't think anyone is using the word "just", but in reality 2nd, 3rd or 4th aren't any odds. You haven't won the league, and you still qualify for Europe.
We'd prefer 2nd as a sign of progress, but 4th won't be any sort of disaster.
Neither position change the work needed in the summer, and it'll be very interesting if we bother trying to improve or not. As last season we didn't. Instead we booted 40m on Van Beek which seems absolutely baffling when he's barely been near it even with Pogba out.