> Since the Microsoft response to the bug was denying and gaslighting the affected people

Well. I wouldn't go that far. Any busy dev team is incentivized to make you run the gauntlet:

1. It's not an issue (you have to prove to me it's an issue)

2. It's not my issue (you have to prove to me it's my issue)

3. It's not that important (you have to prove it has significant business value to fix it)

4. It's not that time sensitive (you have to prove it's worth fixing soon)

It was exactly like this at my last few companies. Microsoft is quite a lot like this as well.

If you have an assigned CSAM, they can help run the gauntlet. That's what they are there for.

See also: The 6 stages of developer realization: