As you’re 100% convinced of his guilt, the best thing you can do as an individual is simply choose not to buy his movies or watch them. That’s a bit more productive than making ranting threats on the internet which could come back to bite you in the ass someday.
I have no reason to see any of his newer movies, but I might (barely) want to see some of his older movies, without being seen as endorsing child abuse or sexual predation. I never want to discredit or defer blame to any victim of molestation.