Thanks for posting. Been meaning to look into this for a while, this was the prod I needed.

I see it works on Firefox on Android.

I also recommend Pihole as the other part of a two-prong approach. It's better than uBlock in this dimension: it prevents objectionable resources from even being downloaded. I have Pihole at home, but when I upgrade to an opnsense firewall I'll just rely on Unbound instead, as it also supports Steven Black's blocklist. I wouldn't particularly recommend Pihole over Unbound.