That's not typically possible. The study shows how BPA acts like human hormones. It might be impossible to target it without also effecting the normal hormones or receptors.
I'm going to prove I'm not a scientist in the following question, lol. The reason I was thinking of targeting was because they're curing some cancers and our covid vaccine targets the virus, it seems like they're figuring out how to keep the good and go after the bad? It might be a system that we can't fuck with, Idk. I know they have a bacteria that eats the plastic, which will help. I just wonder if they've started down any of these paths or have already given up? https://www.livescience.com/plastic-eating-bacteria
I don't think this is about making autistic people go away or find a "cure". Even if we eliminated all BPA magically, people are still going to be born with autism.
As the study explains, its probably only one element of how autism develops, but understanding how environmental toxins effect human development is important.
I don't think there would be a way to cure it regardless based on this finding. This is about exposure in utero. Eliminating BPAs would be a good thing regardless, along with a bunch of other chemicals that have bad health effects.
We've known that BPAs were bad for a while anyway, which is why you'll see that children's bottles and food containers are labelled as BPA free.