Ideology is no small matter. It’s key to understanding a thing in terms of structure, antecedents, methodology, etc. etc. etc.
I recently heard that interview with Lee Harvey Oswald from 1962. When asked “are you a communist?” Oswald is vehement. “No. I’m a Marxist-Leninist.” I chuckled when I heard that, but upon further reading I discovered he became disillusioned with his “utopian” Russia and thought Cuba would be paradise. It’s because it’s the right kind of marxism in Cuba. Or so he thought.