I just watched the Greta Thunberg sketch as it's going round autistic twitter. It's dire. Absolutely awful. I don't really mind that they're using her, I think she's enough of a public figure and has publicised herself enough for that to be fair and at seventeen she's young but not a child. I don't mind that she's autistic, I don't think that's the target of the sketch. But it's just terrible. Lazy, boring unfunny writing, poor delivery and I don't see any real satirical point behind it, it does seem a bit personal.
I read an interview with one of the creators (?writer, producer) when there was a bit of controversy about including Thunberg, and they said they were doing a simple joke with her as a weathergirl. That would have been better, could have been funnier and might even have been able to make some good points about climate change. But this was dross. IMO.