> Pushin doesn't track anything beyond the obvious: email, password hash, username, whatever information you put on your profile
This seems poorly worded or genuinely concerning. Why do you want to track my email, username or anything in my profile. What do you do with it? How do you track it?
"Track" means "store" here and we need to store it for authentication (email+password hash) and to show your public profile (e.g. https://pushin.eu/pjullrich). So, regular things, not tracking you for data mining stuff