But kbin lets you block entire instances as a user, which is worth the tradeoff for me.

Let's you block domains as a user. It doesn't block the entire instance, some posts do and will still come through (as I've found over the weeks lol). They've said on the github that a feature is incoming to outright block instances, if I read correctly.

Edit: Sorry, codebase, not github: https://codeberg.org/Kbin/kbin-core/issues/118#issuecomment-942720 ernests last comment.