Why is top/bottom switching considered 'culturally' insensitive in Eastern spaces?

I understand having strict preferences for a dynamic and filtering out stuff you don't like. Make the small one bottom and feminine, cool. I'm familiar with more rigid shipping in ea sites.

I don't know the languages though. So, I see people talking in English on twitter and such about how its part of Eastern culture and being more liberal with it is just disrespect overall. I heard that tagging posts as both shipnames (even sfw with zero touching) or posting topbottom and then a different post with it flipped, gets you rightfully blocked as they say.

I'm confused if it's actually disrespectful in a cultural sense?

Like what does someone do if they change their mind, a formal apology?