Co-workers who have a tendency to "shepherd" newbies are downright annoying. Other than the initial on-boarding, there is no reason to be involved in solving someone's "new comer experience".
I've had someone who recently graduated work in my team, who'd ask help and always apologize a ton of times for disturbing me whilst I had 'more important things to do'. Even though I made it clear quite frequently that I'd rather get disturbed rather than have him be stuck for hours on end.
Sometimes asking for help can make a new employee feel bad or judged and in my opinion, it is part of our responsibility to make sure this is not the case.
(Again, this does not mean to push your help, but just making it clear you are available in case they need you)
unless a company is rewriting the same 10 input form over & over again, I don't think that will work out great for anyone.
That still has effects today as I was asked by an agent about a job at a company where he now has a senior role and I had to stifle a laugh and turn them down.
They could have done with some advice at the time.
By the way I definitely wouldn't hold it against an intern 20 years later, so I'm surprised that you do. An intern by definition is going to make mistakes, even huge ones.