I understand the logic, I'm just saying that it doesn't seem to ever have any real impact. Or maybe just that it has far less impact than most people expect. For me, the initial concept of a PC is fairly amorphous until I've actually played it for a bit.
Maybe it's just me. I have so many character concepts running around in my head that I'm always willing to switch things around. If everyone wants to play a wizard when we start our session 0, in most cases one or more people will switch out to something else. I don't see coming up with a concept for a different race being that much difference than the compromises I make for group effectiveness.
It is surprisingly easy for have a bunch of character ideas in your head and run into aDM with a settig where none of them fit the race/class/background options of that setting.
Years ago, I went to a table on Session 0 with 8 character sheets for a friend that we created together. All but 1 was nixed by the DM. The friend later dropped.