IME the "top" junior engineers are still fine. They can figure out things on their. But the "mid-tier" ones really end up worse off. With proper mentorship and training they might be able to reach, say, 8/10, but with everything remote they end up at 5/10. Basically I haven't noticed the top end of new engineers getting worse, but the average definitely has.

And the "bottom tier" is definitely far far worse. It seems they just get jobs to work the minimum amount and barely do anything (r/overemployed perhaps)