This forum is an example of open source project. And even here most of topics are some kind issues but situation is very much different than let’s say what one UK based and originally from Germany, but globally operating ”pseudo credit cards” selling company has. They have just complaints and issues that anykind community can’t solve out and there is nothing to discuss — as we are doing now. And it is not the only example of that kind.
My bold claim is that most of company supports are just happy if they have very low rate of returning users 
Sure I was triggered by one and only phrase here:
Generally you are absolutely right. Returning visitors are essential for discussion and DAU/MAU is good metrics for that. But it can be a little bit problematic too, like bounce rate on websites. Almost everybody thinks it is automatically bad, but if an user got an answer and bounces after reading/listening/watching it generates higher bounce rate that should count as good thing. Regardless of a bounce that site fullfilled its purpose and out there is one happy user/customer. The issue here is, of course, we don’t have any metrics to measure that.
So, we are at same page here. I have just too much free time because all of my customers are on long vacation 