Well, correlation can sometimes "imply" causation, but I agree that we still don't have absolute proof that in those instances the vaccine CAUSED the autism. But, I think it is pretty universally accepted that some children have adverse reactions caused by vaccines and that in at least some instances those adverse reactions can cause autism-like symptoms. I know at least one family recently recovered in the vaccine court on this theory but the court was very careful to state that she had an underlying mitrochondrial disorder that was also a contributing cause of the adverse reaction.
To be clear, I think you would be nuts to forgo vaccines if you didn't have some other family history, but I do think it is wise for families with a history of autism to be very careful about the environmental factors to which you expose your child -- including considering delaying/forgoing some of the non-essential vaccines, like chicken pox.
My son had all of his vaccines up until he received the first dose of MMR. At that point he lost all speech and had to relearn every last word that he had ever spoken. Was it from the MMR vaccine or from one of the other 4 that he had at the same time? Maybe/Maybe not. We will never know for sure. Could it have possibly been from the wrong combination being given all at once? Again maybe/maybe not. Even the Drs. can not give us that answer. It is also possible it is not related to vaccines at all but to his galactosemia. Am I willing to take that chance and to continue on with vaccines? Absolutely not. He is 6 years old and still struggles with his speech. It is getting better but it is a slow process and a very frustrating one for him.
I have done much research on vaccines since this happened with him and after reading the ingredient list imparticularly I have decided that for my children vaccines are not the way to go at this time.