you know what's funny. in paypal you are not even allowed to make a secure password. they have a short character limit.
you want to do scans before the content is posted? or you want to scan existing content online that you posted?you could self-host LanguageTool for paraphrasing capability, which would vastly reduce stylometry correlationshttps://github.com/languagetool-org/languagetool
simplex is the real answer. especially over tor. and anyone can host a relay. it's extremely secure too.
useless info for me and my aims sorry