I am neurodivergent myself but (probably) not autistic. The first time I watched the video I actually didn't think that it was that bad and had a similar reaction to you. But once I started to think about it and educate myself more on the topic I realized how bad it is.
Sure it is not the worst video on autism but it still promotes some really bad ableist views.
Autism speaks it is a horrible hate organization. I don't think there is a spoiler tag here so please skip this paragraph if ableism is triggering to you but there is a video of the autism speaks founder where she talks about how she at one point wanted to kill herself and her autistic child because she couldn't cope with having an autistic child and only didn't do it because of her other non-autistic child. She says that while her autistic child is in the background.
I also didn't know about "aspie supremacy" and why people still use the term "asperger" despite being outdated. Hans Asperger was a Nazi Scientist who is responsible for killing thousands of children. He thought some autistic children might be useful as future scientists for the Nazi regime so assigned them the diagnoses "asperger syndrome" while the other autistic children were to be murdered.
I recommend you watch Ember Green on this topic: https://www.youtube.com/watch?v=vaZZiX0veFY