Scattered thoughts about the movie:
::: spoiler Obviously spoilers
I don't like the voice that Ben Affleck is using in the sequel, it sounds so forced, his performance was a lot more believable in the first one. The whole whole center of autistic children/teens working as hackers was also hard to believe. And Justine using the expression "normie" was pretty cringe.
And then there's the "acquired savant syndrome" which made a regular mom into a super assassin, that was also hard to believe.
But as a sequel, maybe not the worst. Jon Bernthal did a lot to pull it up several grades, but the first one was definitely better.
Ben Affleck took a bit of a backseat in this one, and he didn't do too bad besides how he sounded almost like Arnold Schwarzenegger in the motel.
:::
And to answer the question "how well is autism represented?", I'd probably say it was "fine". I actually think it was worse in this movie because it played too much into the neurodivergent superpowers trope. On the other hand, that could look empowering to some.