This assumes that Jr Dev wanted to be trained, and could be trained. I've known some AI-brain "devs" from before AI was a thing.

If someone can't be bothered to read an error message, can we really be expected to teach them how to debug? Etc.

It is a long story but yeah it was about 80% management's fault and 20% the fault of the dude having zero ambition. I didn't expect this comment to get so many downvotes... it's as though I would need to explain that I'm not entirely blaming him for continuing to be employed in a problematic manner as he was. Obviously management should have addressed the issue and didn't, but why am I not allowed to blame a person for sucking at their job... ? If the idea is that if I thought he sucked I should have fixed it, that's silly, but regardless I did try to teach him things. He never retained anything, so after a few months I gave up.

Sometimes it just doesn't pan out.

Had a junior dev that basically decided he would rather try to grift through instead of doing the job. Never seen someone work so hard at trying not to work at all. Every day it was a different excuse, a different other person to point to as to why he didn't even try to do anything that day. I think at least 7 or 8 of his grandmothers died during his tenure. And management ate it up.

Until one day he lost track of things and blamed the manager asking him why things weren't done. Said the manager never sent him some material and of course the manager had. Suddenly the manager believed the rest of us who had been saying he was lying for the last many months...

The key was he was cheap and was in theory supposed to be as good as a higher paid alternative, so management would have to admit to being wrong to ditch him...