just got this, the default was set to let anyone search for my account. so if you use plex you might want to login and turn that the fuck off
edit to add: here's a post on where to find these if you don't get the pop-up: https://cohost.org/margot/post/3202898-okay-i-ve-had-a-cou
okay, i've had a couple questions asking where this is if you don't get the pop up, and it took me forever to find, so here's some visual aides for turning this off.
You want to click on the icon with your picture in the upper right, and choose 'View profile':

Then you want to look for these little heads next to certain options and click on that:

And finally, this window should appear that lets you change your options:

