Too many subs will permanently ban you with no hope of appeal over a single comment because they are "too active" to be able to honestly handle appeals, which means you basically can't disagree with anyone (especially a moderator) on these subs or you'll just permanently lose the ability to comment. It you try to appeal then they threaten to report you for harassment and mute you from sending further modmails. How am I meant to learn how much disagreement is acceptable for a given community if the first time I find out it's too much is with a permaban?

IMO, there are so many much better solutions. Reddit should enforce a moderation system with warnings and strikes for first or minor offenses and remove the ability to permaban unless the comment breaches Reddit's own more serious rules (hate speech, doxxing or calls to violence etc.) or the user has accrued strikes. Some Reddit mod teams clearly don't care that their policies permanently negatively impact real people just trying to enjoy the site because once you're banned, they don't have to hear about it! You would never find blanket zero tolerance policies like this on any moderated sub or forum anywhere else.

Are there any decent alternatives to Reddit that don't encourage such practices?