I think there's a problem with semantics here, or at least to many people not deeply invested in these issues it feels like semantics. To those who deal with this stuff every day it seems like there's a huge swathes of insulting ignoramuses out there who are being wilfully cruel but for many they simply do not know, they have not been educated and have not been exposed to these issues at any great length.
For instance if you asked the average bystander what bisexuality meant they would say someone who was into men and women. Going by the explainer in the OP this is insulting by using gender in the description. Most people out there would not understand why that would be insulting.
I find threads like this feel like they're flying off the handle to an average bystander like myself. I didn't see anything wrong with the clip until it got explained to me. The average viewer would think it was very progressive and enlightening but apparently it's offensive to some. The average member of the public does not understand this stuff. It's way outside their circle of understanding. It's good to educate but I feel like we should try not to tell people they're horrible for not seeing how it is offensive.
There's not been much in the way of telling people they're horrible for not seeing how it's offensive. When people ask to learn, they almost invariably get a legitimate response because we want people to understand. What is horrible are the swaths of people coming in here and getting pissy at us for being upset by the clip. None of those posts feel like people want to learn, they feel like they want to shame people upset for feeling upset.