" By attacking the sanity of religious people you are basically telling them how to live."

So when a Christian missionary goes to a tribe of indigenous people and brings them the "Gospel" is he or she telling those people how to live when he says their god are not real, or are demons?
The acid test for me is to take anything any religious person says about their beliefs and replace the word god with Jelly and Blancmange, and church or similar with the Rice pudding factory and then repeat it back.

'Our Jelly and Blancmange who is in the Rice pudding Factory , hallowed be your name. Your the Rice pudding Factory come, your will be done, on earth as it is in the Rice pudding Factory . Give us this day our daily bread, and forgive us our debts, as we also have forgiven our debtors. And lead us not into temptation, but deliver us from evil. For thine is the the Rice pudding Factory , the power and the glory, for ever and ever Amen'"

If it sounds totally insane, then they probably are, and providing I was sure they were not subscribing to that grand old American, totally sane, practice of openly carrying a gun in public... then yes I would say it to their face.
Because you do not want to piss of a person saying fucking insane things who is carrying a loaded weapon.

By the way Newton was also an alchemist and a sorcerer who believe in no end of genuinely insane things
his Biographer David Brewster, lamented as to..

• ‘how a mind of such power, and so nobly occupied with the abstractions of geometry, and the study of the material world, could stoop to be even the copyist of the most contemptible alchemical work, the obvious production of a fool and a knave.’ *

He was also a pathological misogynist who believed the sole purpose of women was to distract "men of genius" such as himself from higher thought and logic.

@LenHazell53 If the children on the playground are calling each other names, someone has to step up and be the first to break that cycle by expressing respect lest a fight break out.

That might not matter over there but our kids are all armed.

@LenHazell53

“Newton called light particles, knowing the concept to be an effective theory useful, not true. As noted by Newton's biographer Richard Westfall: The ultimate cause of atheism, Newton asserted, is this notion of bodies having, as it were, a complete, absolute and independent reality in themselves. Newton knew of Newton's rings and was untroubled by what is shallowly called wave/particle duality.”

[nature.com]

I expect that if Newton were alive today he’d be at the forefront of quantum physics. He’d probably be a champion of cold fusion, which has its “alchemy” aspect, and the world would be better for it.

So far as women, Newton’s desire was to avoid romantic entanglements so that he could devote his life to the study of the mystery of the basis of reality. That doesn’t mean that he hated women. We all benefit from his decision.