I always wonder why PIA never makes it on those lists? Privacy Guides is a great resource btw, I'm not throwing shade. Feature for feature tho, PIA is a top contender, it would seem to me. Battle tested, audited, and proven in court. So, like OP, I get to wondering, do they know something I do not? I've been using them for numerous years without any issue.
I do not receive any kind or manner of compensation or quid pro quo for mentioning PIA. I don't even get a little ass play which i think is a gyp.