I am not technical enough to comment about key rotation.

But only fascist users, hostile to LGBTQ+ and progressives - I am not so sure this is completely true.
Like all social media, what you see is influenced by who you follow. But it's an open protocol and you are welcome to be the change you wish to see and bring more of progressive friends if you so wish to. No one can dictate how you do Nostr - do it your way 👍