To be clear, the need for #nobot, #noarchive, #noindex, and #nobridge was not born out of some single discrete event. This happened in four separate events. This has been a recurring problem on Fedi at least four times I know of. And I'm sure there's plenty of other bots out there I don't know about that I would have to opt-out of in the same way (if they bothered to let you).
And it should be abundantly clear that there is no respect for GDPR, privacy, boundaries, or anything but a modicum of shame in any of these actions.
Not that it has ever been any different online. Go look up robots.txt. This situation has not ever been any different.
Welcome to the Internet, y'all.