There's a glut of junior dev talent and not enough real problems out there which a junior can apply themselves to.
This means that most of them simply arent able to get the kind of experience which will push them into the next skill bracket.
It used to be that you could use them to build cheap proofs of concept or self contained scripting but those are things AI doesnt actually suck too badly at. Even back then there were too many juniors and not enough roles though.
Though cleaning up garbage fires isn't exactly fun. Gonna need to raise my rates.
This is what I did way back when I was a professional web designer. Cleaning up nasty "tag-soup" DreamWeaver and MS Word websites for folks cost extra compared to my normal rates for just building them a fresh "from-scratch" website.