[tracker1]

I wouldn't say that... I'll often put in "for next time, look at..." type advice in Pull Requests from more junior coworkers. Sometimes working is more important than ideal.

It's when a Junior-Mid dev has to add a feature that's made difficult by their own choices and then rethink to make things better they tend to learn. That said, plenty of Jr-Mid devs don't advance with more practice, they stay jr-mid.