Drawing "realistically" doesn't affect your ability to be an artist in the slightest.
Explanation:
Look at the art style of animator Dana Terrace, animator of Disney series "The Owl House". Her art isn't necessarily "realistic," but it's incredibly impressive nonetheless. My drawings aren't realistic in the least, but I'm still proud of them.
So in conclusion, it doesn't. It might discourage early artists from progressing, but it doesn't affect your ABILITY to be an artist, just your own mindset in the right circumstances.
