I work on a product, and we include some telemetry. I'm also a strong privacy advocate, and I believe I've done my best within the corporate realm to ensure that the data we're collecting is extremely scoped AND useful for decision making and prioritization. In my experience, there aren't that many of me, but I implore folks to realize that as PMs and engineers, we absolutely do have a say in making sure that blanket data exfiltration and aggregation doesn't happen in our products.
Communicating with your customers proactively about what you're collecting and why is important too. And not buried in some privacy policy legalese: publish a blog post, explain what you're gathering, give examples of how it's driven decision-making for you in the past, and what you're hoping to learn in the future. It goes a long way.