some ISPs may be blocking cat box because there’s a significant amount of porn being uploaded on there, but that’ll happen with any file host as open as catbox

hosting files, especially videos, are expensive (hence why most instances disable video uploads) and, if public, has a hefty moderation workload, so anything of reasonable size (and isn’t personal) will end up either enshittified a la imgur or die.

and we shouldn’t expect everyone to have their own webservers just to share their silly stuff on the net. this is a difficult problem to solve