The second one actually seems to be harder for some people. It requires separating the syntax from the semantics

Agreed on all further ones, however

What makes you say that? I learned HTML using Notepad and Netscape. I had a single semester as senior in high school that taught PASCAL, but that was 7 years prior. Not really sure how that helped in the slightest.

I don't feel this is any different from someone that might have taken a class that taught HTML/JS/CSS except for that would actually be learning directly applicable to today. If that type of person jumped into a bootcamp, I feel like that would be similar to anything I experienced if not better. The internet is a thing now so there is so much more access to anything I had.

I strongly disagree with this. It’s more like languages hit a common wavelength. Sometimes it makes sense, sometimes it doesn’t.