Certainly possible but in this heightened world of censorship its possible sites were blacklisted for other reasons.
But what you said is certainly possible.
Do you know or is there a way of knowing how sites get added to it?
Came across this post while looking for something else and will add a couple things that I know to be true, first and foremost back a few years ago I used AI Protect for 'malicious' sites and I found it was blocking certain sites that had nothing to do with malware or phishing but political...