Assuming hotjar is some analytics platform..what's the purpose of it? Who has access to it?
All actions made on the interface is publicly logged, to maintain accountability. All users of the interface during initial sign on have some insensitive data saved. This data includes current username, last sign on, last action, preferred language, cached public data provided by the OAuth extension, and whether they are blocked or not. No private data whatsoever is recorded or logged.
That last part of which isn't true if the user opts in.