Reaching an actual human at Microsoft isn't enough. You have to reach the correct humans which is a much harder task. For example, you might have an idea. What if azure devops had a field for date component only, not date time, just the date because it would help you in an internal project. Can you find out who to reach? Even if you work at Microsoft, I would bet you cannot. Even when you find a defect in an internal product you are using, getting to a human requires you to go through layers of nonsense. I distinctly remember my manager telling me to not even bother explaining myself to the first support chat and to simply ask them to escalate. I was impressed at how they managed to make security a part of your review though. I never thought getting buy-in to update Newtonsoft.Json would be as easy as it was but a CVE meant you had to update it to whatever made the security flags happy.

Once I could reach the actual engineering team to look at the internal tool to look at the bug I had to report though, they were very responsive. The tool for communicating was cumbersome and made me feel like a vendor / customer relationship even though you are supposed to be the same team but once they realized it was an actual defect and not some harebrained feature request, they fixed it relatively quickly.