No, don't pull back. Your opinions are just as welcome here as anyone else's. I, for one, would like to hear what you have to say. While I can't say I always agree with your conclusions, your research of facts is generally first-rate.
And you are right in your assertion that absence of proof in not disproof. I think we can all agree on that.
But I think we can also agree that after 10,000 years of trying to prove that 2+2=5, the lack of such proof is a pretty definitive assertion that the assumption is most probably wrong.