Agreed. It's ridiculous that we can't even fully disable it in the latest macOS releases (the commands others posted below don't work in Big Sur to completely disable quarantine).
Note, the single command does turn off Gatekeeper. File quarantine is separate and needs a separate command. That is as it should be IMO, they’re completely different things.
Right, but do you know if there is a command to actually turn off quarantine? I mean really turning it off, not just removing it from already existing files. To my knowledge, that doesn't exist.