It does not matter if you RP something you've actually lived, there is almost always going to be someone happy to lecture you about how unrealistic it is. Sometimes its because their own experience is different, sometimes they just feel extremely empowered by their PhD in Wikipedia.
I am trying to think of a single type of play where this hasn't happened, and I cant really name one, since people will argue to death over differently interpreted minutiae in pure fantasy worlds, or need to tie it into the same RL histories.
I think if someone's RP is just terrible, it's more likely people will just avoid them. If someone takes it upon themselves to go all out lecture/"I shall educate you how to RP this right" mode without even asking questions or finding out more (and especially if they seek to do it publicly first) tbh most of the time at least they're full of shit. I can think of a few exceptions but they're very rare in what I have seen.