Hah, similar thing happened for me. I think the main issue was that departments that relied on creative problem-solving (e.g. business development) ended up being way louder than others that didn't as much (e.g. QA)

Another issue is that tech orgs are extremely political. There was one person who had single-handedly created a viable migration path from the company's aging proprietary framework to .NET MVC5, but no kudos there. Just lots of pushback and skepticism.