Wakefield's work ended up being fraud. BUT, the only reason it was accepted in the first place before it was found to be fraudulent is because the hypothesis was credible. If he had fraudulently created work that showed that autism is caused by magic spells from dust bunnies, it never would have been accepted in the first place.
You are taking a reasonable argument and letting your anger make you take it too far. You sound JUST LIKE THEM. Again, science cannot and does not try to complete disprove things. Science can effectively disprove something if strong studies (or tests) do not show the outcome, combined with independent methods finding the same result, and finally, alternative explanations explain the data better.
I personally feel this has been effectively disproven, but that third criteria would be debated. Saying "disproven" will not make them go "Oh, ok, I was wrong, thanks." It will strengthen their resolve because you sound argumentative and dismissive, exactly what they say medical people are. I see all over that we are working on "faith" in vaccines and all that nonsense. Absolutes sound faith based.
And, BTW, this is what has been happening since COVID and, guess what, THEY ARE WINNING. Maybe putting away the high horse and letting someone they trust, like Bhattacharya, walk them back through it maybe better than the pissing contest you are obviously in even if you claim otherwise. Or, you can stay on your high horse and be correct, but lose.