[Groxx]

Yeah. User reporting has a very obvious and very strong survivorship bias. Plus the people who take the time to send in a report are a rather small niche, so you have pretty strong bias even if you exclude people who leave.

Always-on metrics are massively higher quality data. They don't collect the same kind of data in many cases, but they can reveal a lot of things that never get reported. They also don't suffer from the well-established pattern of people not accurately reporting their own behavior when asked / polled (stronger when asking about future behavior, but it applies in all cases).