I'm not generally into conspiracy, but as I keep trying to work out the
issue I described in this thread, I came across this:
https://sneak.berlin/20201112/your-computer-isnt-yours/
Might explain quite a lot, actually, (particularly at the FAQ section
under "When did this start?") and why it feels like macOS has taken a
huge dive (that I couldn't explain) since Mojave.
I still have High Sierra installed on my 2017 15-inch Mac, and will
likely keep it that way forever... if for nothing else, but as a
reference of what once was.
Staying away from Big Sur for as long as I can.
Mark.