I think it’s separate, assigned automatically by scanning the subtitles and imagery, probably.

“you get a warning and need to click past it once” is probably the right set of guardrails there

You also have to sign in…

IME the wayback machine might give you the post body. I tend to need the comments as well, and archive.today can save all that properly. It usually isn’t saved already, so you’ll have to wait a minute or two. I just use this time to look for other sources.