I’m disappointed but not surprised that the title is editorialized. It specifically leaves off “whistleblower alleges”. It’s literally one disgruntled former employee claiming this. But as usual for HN these days a tiny populations claim - in this case a population of one - is stated as fact.
The piece written by the whisteblower includes links to documents: https://www.lioness.co/post/microsoft-is-using-illegal-bribe...
One of the things I think this really highlights, and that absolutely infuriated me during the Trump impeachment hearings, was that categorizing a whistleblower as a "disgruntled former employee" does not negate the evidence that they show of malfeasance.
I mean, of course whistleblowers are usually disgruntled about something, but a major point of whistleblower protection laws is that the motives of the whistleblower do not matter. To the GP comment's point, it's true we shouldn't just take accusations as proof, but the whole role of a whistleblower is to provide the "thread" that investigators can then pull on to get detailed evidence of what was going on. And, given the links to documents in the above post, I think this looks really, really bad for Microsoft.