Wait are these people who logged in though Keychat?
Discussion
Keychat users can generate multiple IDs. When they open a Mini App in Keychat browser and tap Extension Login, an ID list pops up, and the user selects which ID to log in with.
Oh thats super cool and convenient! Its definitely nice for testing an unknown app or website. I'm using nos2x-fox extension but I'm unsatisfied with it so I might give Keychat a chance!