Using a VPN and alt accounts are practically a necessity. I have 3 main accounts: one only posts on niche hobby forums, one for "clean" subreddits (/r/news, pics and the like), and one for anything remotely controversial.
Similar here. I differentiate by how little I care about revealing my actual identity and location. Like for hobbies and stuff I really don’t care if people know my approximate location. But for some stuff… dudes are crazy. Would rather not get doxxed.