Some Microsoft skeptics are more thoughtful than you concede. For an example, I strongly suggest you to watch the "Linux Sucks. Forever" talk by Bryan Lunduke [1] (who worked at MS some ~5 years).
If you don't have the time, the most interesting part starts at 7:29 [2] with a tour of the many ways Microsoft attacked Linux in the past, while from 13:55 [3] on he goes into how he thinks Microsoft (and others) are hurting Linux today.