I don’t think they had anything specific in mind, but they just don’t want to create prominent female figures, be it real people or game characters. They have a long history of suppressing gender equality there.

Yes https://theweek.com/tech/video-game-china-censorship

I think it’s related to the push notifications.

You can check by disabling them.

• Type in about:config in the address bar, press Enter
• Search for the preference dom.push.enabled and double-click it to set it to false.

https://librewolf.net/docs/faq/#does-librewolf-make-any-outgoing-connections