Translation: iOS and Android users will be able to send pictures and videos to each other that aren't blurry, and features like read receipts and typing indicators will work.
Because scary N word that's also the same word used by a type of weapon. If they were called "fission thermal power plants" or something like that it would be way less controversial.
If you watch the actual video, the joke was "say something that can be taken out of context". He still went a little far but it's important that he didn't actually mean it. Edgy jokes were common on YouTube back then.