As others have said, I use a client that doesn’t display them, so it never dawned on me. And in general, profile pics have never been a big deal for me. So if the app or site doesn’t make me do it as part of the account set up, my profile pic just stays as the default.

You can set profile pictures on Lemmy?

Have to agree. And this is pervasive enough that lazy articles about tweets are now a major percentage of online “news”. So-and-so destroys x-and-such on Twitter!" So what? It doesn’t change anything or anyone’s mind.