@stux There are situations where a missing block on another instance can actually be a problem: https://wirebird.com/artiblocks/defining-secondhand-smoke
It's not a super common scenario, though, I'd think. For my part I would be very very suspicious of a site that didn't block, say, truth.social--but it wouldn't be immediate grounds for defederation, just caution.
@kaliranya This would be a rare case indeed but yes!
I have consider this but deemed not 'woth it' 😉 It just happens not that often for blocking 'second hands' :blobcatgiggle: