I have Linux installed on a raspberry pi, using "Pi OS", which I understand to be some form of Debian? I've learned enough to comfortably SSH into it and navigate around my file system, as well as write some really basic Python programs for the pi using nano.
I've only been at it casually for a few weeks, so that's about the extent of my knowledge.
It's real. I think Perspectives is like "Opinions" or reviews.