Depends on if you think Plex is lying or not.
If Plex honors their privacy option at:
https://www.plex.tv/about/privacy-legal/privacy-preferences/
then playback data should not be collected, and same for the “Sync” watch state data. If those are both off, then I agree, no playback data should be reported to Plex.
If they are telling the truth, then Plex just has an IF statement saying whether or not to display the menu.
I honestly, don’t expect to have Plex to somehow rip out all the Discover code because I set an option to Disabled (though I wish they had never added the coded in the first place). And, so far I haven’t yet seen evidence that is strong enough to me that Plex is capturing information that they said they are not. I would also agree with many others, that data collection should be Opt-in, not Opt-out.
Dokuro, may have seen more, but from Plex’s response, it appears that his report concerned Plex too.

