I'm in the process of looking for a new job myself at the moment, because the MS zealots are incrementally making my life more difficult day by day.
If it were up to me, companies that put critical infrastructure on microsoft operating systems would be held criminally liable for their actions. :-)
I've got a couple in my class. I call 'em MS coolaid drinkers. They're so pigheaded. They won't even TALK about something else - let alone consider it an Operating System. I asked one of 'em the other day what he would do if his boss told him to install a Linux server. He said he would quit his job. Something wrong with those people.
Sure it's possible to avoid MS products and my hats off to you if you've found a way to do it.