The needs of the many outweigh the needs of the spicy autocomplete.
Hell, I'd argue that Vibecode without the prompt that generated it isn't even real open source.
The learning doesn't come from copying and pasting code from stack overflow. It comes from
A) searching which code to copy and paste
and
B) Fixing the broken code that you just copied and pasted.
I suspect most programmers outgrow the "copying and pasting from stackoverflow" period of their development pretty quickly when they get frustrated by the fact that most of the stuff they were copying and pasting is broken or sub optimal in some way. If they prompt claude "write me a function", and then when it's broken they prompt "fix the broken function", they're learning (and doing!) a lot less.