My dad ain’t nice but he can be tolerant, my mum can be nice but her extremely narrow worldview does not let her be tolerant, and my grandma is neither nice nor tolerant. Never met really met my other grandparents to comment.
They never challenged their conservative upbringing, and never faced progressive values until well into their adulthood, since social issues move at a glacial pace where I’m at. I don’t blame them for having those values at some point, but they should strive to change (well, my parents at least).