The most frightening part for me (if this is indeed real) is that they have no testers.
TBH the lack of testers shows: I used Windows 8.1 since it came out and apart from minor issues at the start (Start 8 is a godsend!), I never once had a BSOD... Win 10 gave me 3 in 3 months so I removed it.
Morbidly fascinating.... The reference to experimenting with "putting ads into the start menu" makes me wonder what the consumer business model for Windows 10 looks like?
I especially loved the part where he explains that Metro was/is designed in PowerPoint. I did not expect that, but it makes perfectly sense now.