These are two very separate things. I hate X. That doesn't mean I hate the few remaining people on there who still post things I wish to see. It's an annoyingly good source of artwork. Many migrated/dualpost to Bluesky, but far from all.
For some similar real world example:s I hate (all?) the local grocery stores and other shops I buy food from. That doesn't mean I'm going to stop buying food from them. I'm not a fan of any of the local electronics shops, but sometimes they're the only choice if I want a local warranty, which I wouldn't get if I imported one. The actually good option in both of these cases simply doesn't exist in the first place, and doing nothing is rarely a desirable option.