Watch the threads whenever Henry VIII is the topic or even mentioned in passing. You’ll see. It’s true even of England or the UK in general. It’s religious.
It is NOT entirely religious. I’m on dozens of forums on Tudor/medieval history. He has his supporters (why I don’t know) and his detractors. They come from a range of religions and political points of views. I think you’re letting your bias get in the way of reality. The religious threads here are by their very nature going to focus on religion.
Someone here mentioned the tv show Wolf Hall based on Hilary Mantel’s book. It is from the Protestant point of view, very intelligent, and even THAT show portrays him as an unstable tyrant.