I can see how this could be annoying in some contexts e.g. going to some project's discord to get answers to a question, searching a channel and finding the perfect answer from awhile back but then not being able to download the file that was attached at the time. I don't think that's super likely to happen though. IME most answers I've searched for were entirely encapsulated in text anyway. The larger problem of using a discord server for such projects still exists, but I don't think this makes it all that much worse.