Wow, peculiar. But ties into my point - there's now "Save to Files" _everywhere_ on iOS (even where it makes little sense) and yeah def a pain when apps that can clearly handle a filetype haven't registered as a target for it.

BUT prior workaround was as simple as a basic Workflow share action accepting any input then giving a list of options - Dropbox/Drive, push to desktop over SSH, try "open with" (? can't remember) which for some reason would have a slightly different list of targets... So, file manager is good, obviously, but you weren't crippled before it.