It's hard to say. It could depend on their policies and the nature of the user's activities. Sometimes sites blacklist IPs to prevent spam or illegal access, but for Baka Manga specifically, it's not clear without further information.
No, Baka Updates is mainly a website for tracking manga updates and providing information about manga series. It doesn't offer the actual manga for reading.
Honestly, I have no clue. 'Paramour manga' and 'baka' seem quite disconnected and could be part of a very specific or unique context that's not common knowledge.
I'm not sure there's a direct relationship. 'Onepunch Man' manga is a popular series on its own, and 'Baka' might not have a specific connection to it.
Honestly, I have no clear idea. It could be that Baka is some kind of reference or nickname within the Fruits Basket manga universe, but without more context, it's hard to say for sure.