To me, it feels like typing each character manually cements the knowledge in there much deeper than 'oh, I think I understand what I'm copy/pasting.'
Maybe that's a shallow truism by now, but I still see people struggling to learn programming via copy/paste from examples.
I get what they're saying (probably from dealing with too much rote school work in the past), programming is more about critical thinking than memory, but it really helps to have the core constructs memorized in a language. If you have to google "loops in python" every time, it's not going to go well.
Every time I turned the power off or wanted to try a different program I had to start from scratch.
People are still pulling old software and data off of some of their old CoCo tapes, what little problems there are typically can be solved by dumping to digital file and editing in some audio software to clean things up.