How can you tell by just looking at their profile? Bots have for over a decade been able to generate a profile with a real looking picture (usually just scraped from the web) and a realistic sounding bio.

Tangent but reddit allows people to hide their post/comment history which is fine I guess but it's not great for that reason, trying to see if an account is a bot or not. Other than age can't tell anything about that account.

I notice more and more accounts use it, particularly the spicy commenters. Which is whatever, I try to stay away from social media now, this is SM here but at least it's more technically oriented/useful.