I don't know why you are trying so hard to carry water for a team of engineers at a company that has the history to know better.
The team that built peerd had the good sense to consult with the author of Spegel before moving forward with their project. A simple note to their business line lawyer (or whatever they call them at Microsoft) at work to say "hey, we are going to use some of this code from this open source project, what do we need to do?" would have taken less time and effort than setting up the meeting with the Spegel person/folks. That is assuming there isn't an easy to find page on how to consume open source software on Microsoft intranet. Every major company I have worked for (HSBC, Mozilla, Amazon, Fastly, Cisco, to name some) has had this going back to 2005. This isn't rocket science.
You also don't need to be a legal expert to comply with most open source licenses, and the MIT license in particular is really easy to comply with. Just copy the code, and whatever file you copy the code into gets an attribution comment at the top.