Of course direct feedback is good. But it's not scalable and you risk of running a very real case of bias towards whoever you're asking. Running telemetry on your software is not "evil" or "stampedes over civil liberties". You can most certainly run telemetry in a way that protects people's privacy and gives you insightful data on how your users operate and interact with your software. I know this, I've worked on an analytics service serving hundreds of millions of users. I'm building right now a feature-flagging/configuration/core metrics service that does exactly that: preserve user privacy and allow developers to learn about their users (not easy and there are some trade offs, like accuracy).