At the risk of sounding somewhat naive, I think people do have the capacity to grow over time. Perhaps part of the reason why Microsoft has seemingly turned over a new leaf in recent years is that upper management has learned from their past mistakes? I do see your point though, and I think it's stuck in the back of a lot of our minds.
It's not so much a grudge as a reaction, call it an immuno-type response. I shed my MS-OS Windows Desktop addiction over 20 years ago to become a desktop Linux user and I still see my co-workers struggling every day with many of the same issues I haven't had to cope with anymore since then.
Ever since I have been able to get the Microsoft out of my systems, I find myself naturally predisposed to keep it out. I am not against Microsoft, I really am a fan of a lot of the open and developer-focused things they are doing, certainly not least of which is their support for Kubernetes through Azure, but this does not make me more receptive to going back to living in a Microsoft OS-flavored ecosystem today, it just is not happening for me and it's nothing to do with holding a grudge or similar.
I use a Mac now because it was provided by work, if they offer me a trade for a Windows machine I would probably consider it because of the progress made by WSL2, but our group policy lags somewhat behind and certainly not on insider ring, so none of my coworkers have been able to try WSL2 on their work-provided Windows machines, or likely will for some time, and that makes me seriously think twice about it.
My natural inclination is that I would much rather install Linux as the host OS so I have control over things like when updates get applied, or whether a reboot needs to take place immediately, in spite of the struggle that sometimes comes with that, it is really much better to have the source and keep the capability to control your own hardware. And then only run Windows in a VM whenever it is really needed. (In other words, to be able to occasionally run Windows apps in a similar way as I do when I have to use them on a Mac.)
