ActiveStorgae was launched half-baked. Downloading files on the back end was missing from 5 and not introduced until 6. This seriously burned us as we had to put off implementing a ton of what should be easy reporting features until we could get around to upgrading from 5 to 6. Rails strategy of bundling everything together was a huge problem. With Rails7 it looks like ActiveStorage has finally reached parity with Paperclip, so while its nice that there's a built-in option, fundamentally we're still back to where we were years ago, as its not like it took longer than 30 minutes to setup Paperclip either.