I think it's the stereotype of autistics are supposed to be able to to count a bunch of toothpicks instantly. (Link: video example from Rainman) It's not saying she is or isn't autistic because of not being able to count them. It's saying she's bad at being autistic -- can't even count 3 toothpicks on the ground -- the opposite of the stereotype.
I think "worst kind of autistic" here does not mean that's she's severely autistic, rather, it means she's bad at being autistic. Or, maybe perhaps, that she's the least desireable kind of autistic to have around. Not a judgment against autism. Rather, accepting autism, and judging her versus other autistics.
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not aspie, not NT, somewhere in between
Aspie Quiz: 110 Aspie, 103 Neurotypical.
Used to be more autistic than I am now.