> This isn't hard.

Or it can be near impossible. Large orgs can have dedicated onboarding programs for junior developers, this can work quite well. Small or medium orgs can have one or a few senior developers who are passionate about mentoring. This can also work well, but is unusual.

What is much more common is for new hires to encounter a nearly impenetrable wall of “figure it out, don’t bother me”. I have experienced both, and I’m sad to relate I’ve been a wall at times. I found I could only explain a stack trace n times to the same person before I personally noped out of training juniors.