I've just watched that video and before I say anything else I'll mention that I'm Deaf (total loss of hearing in both ears). I have grown up oral (speaking English as my first language), but I am also fluent in Auslan.
That was not Auslan. Oh boy. I have no idea what that shit-show was. The subtitles didn't match up at all to what she was signing - at least, to any Auslan signs.
I have so much I could say about how offended I am that she's taken sign language and made a mockery of it by pretending to be 'inclusive', when she hasn't done her due diligence and researched/learned/consulted with Deaf people.
If she's trying to market to an audience of Deaf people - I'm sorry, but none of them are going to understand her. She wants to appear woke and educated but she's made a total fool of herself.
(It's probably ASL or something [American Sign Language] because that's used fairly often for rip-off videos and skits but I wouldn't know since, you know, I learn and use the language that will allow me to communicate in Australia, where I live.)