The thing to understand about Christianity is that it was originally a reaction against the Roman empire and then got co-opted and integrated into it. As a result, ever since like the 4th century Christianity has been about basically the opposite of what Jesus talked about. It turns out all that stuff about turning the other cheek stops being relevant if the emperor has his soldiers paint crosses on their shields while they're out conquering and enslaving the Gauls. Of course, you can keep all the mythological stuff, who cares, but anything relevant to politics or the material world mysteriously seemed to reverse once they entered the halls of power.
The carrot of being accepted into the empire was matched with the stick that if you didn't go along with the imperial-approved form of Christianity you'd be burned at the stake as a heretic. Any sects still clinging to anti-imperial sentiment get hunted down and exterminated just like when they were being fed to lions, but it's the Christians doing it to each other now, so you don't even have to get your own hands dirty. This approach worked way better at suppressing dissent than just trying to ban Christianity altogether.
Of course, a lot has changed over the centuries. And originally it wasn't perfect or anything either. But imo, it was when Rome Christianized that Christianity Romanized, and ever since its real values have had more to do with Rome than with Jesus. The meme's, "moneyless, classless, stateless" ideal of heaven is a relic of the original teachings that gets shunted off to the purely mythological side, where it not only doesn't matter, but also occupies a place in their brain that could have otherwise been sympathetic to making good things happen in the material world. That's already resolved, there's no need to worry about it, there'll be pie in sky when you die.
