That's a fair criticism of my personal projects. Maybe 3-4 of those could potentially see usefulness outside of myself.
At work, I would say I've done plenty of "useful" things with AI, but that's hard to show off given that I work on an internal application.
I don't think you should feel like your personal projects need to be vetted by an armchair peanut gallery. It's actually kind of offensive how so many people show up in a thread like this and demand that what sparked joy for you be formally subjected to a gauntlet of moving goalpost validation markers.
Quite simply, I don't think that they are asking or arguing in good faith.