The block is registered to your account, the follow is saved in their account. You can’t delete data (like who they follow) from their account.
the funny thing is the UI doesn't let them unfollow while blocked... I was blocked by someone I'd followed, had to finally hit the API to remove my follow
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Reply · Jul 16, 2023yeah, being able to remove your side of a former mutualship is good (and can be done now w api call)... making a core use case more difficult to…Reply · Jul 24, 2024@hellwaifu i don't block ppl for unfollowing, so if they follow back and engage again i'd probably refollowReply · May 4, 2023one of the devs said this was a bug tho, may be fixed in futureReply · Oct 17, 2025@OneEyedAlpaca depends! i've been blocking recently because i am trying to shift my location in the social graph without unfollowing mutuals. when…