He's "struggling" with it, which means it's gonna get dropped soon.>>96198607
Hank was an atheist, sure, but ever since Avengers Academy he became a Fedora Tipper. Tigra asks him to be a Godfather and he REEs about it.
As for Tony nah, he's prayed to God and gone to Church many times. When he killed Happy, when his Sentient Armor "died" and he buried it and put a Cross on it (he even engraved it), even though he was at an island all alone, when he was dying in the Armor Wars epilogue and had to go all out. There are probably more in all of the books, but those are the ones I can remember at the top of my head. He wasn't devout or anything, but considering his mother is a Med (either Italian or Greek, I can't remember her surname exactly), he grew up on some form of Christianity. Hell, one of the few memories he retains while in his "soon to be dead" comma is Howard telling him that God's message is hidden somewhere in Pi. Even in the Ultimate Universe, before they blow up Banner, he fliews within seconds of the Nuke's ETA and puts some Rosary bands in Banner's hand.
To turn Tony into a Fedora Tipper who considers Santa a scam goes against decades of established continuity. The whole point of his character is that he learns to harness the tech. "Use the machine, don't become the machine" and all. It's all about the contrasts in his character. He's a flirt, but he's really not degenerate (seriously, read the books, he never pumped & dumped). He's a businessman, but he's not a cold-blooded serpent. He's a capitalist, but he's not an amoral cunt. He's sociable, but he's also intelligent. He's logical, but still human. Take away the "primitive" point of faith, and you lose the dichotomy, turning him into a second rate Mr. Terrific. People forget this, but Tony was an emotionally vulnerable nerd who played with Lego as a kid and a teen.