The supposed asymmetry only holds in a framework that assumes the Christian God as the only possibility. The point is that it's possible for there to be a god that isn't Yahweh, and that god might sentence you to eternal torment for believing in Yahweh, so in fact believing in Yahweh can result in infinite cost, destroying the value of the wager.
The hypothetical god who punishes believers of a Christian God is a legitimate objection to Pascal's wager, but it doesn't establish the original assertion I objected to. You're confusing demonstrating that the asymmetry isn't guaranteed with demonstrating that it requires Christianity to be the only possibility. Those are two entirely different claims.
Or in a stronger argument. It only works when you're the only possible infinity that exists with the set of possible requirements. The moment another infinity exists that has even a single conflicting requirement then it falls apart.
Using language we can create infinite conflicting infinities which makes Pascals wager a weak argument in a generalized set.
Now, if someone vibe coded up Roko's basalisk into a real entity that was copying humans and torturing them for eternity that's a different story, at least until someone made a second incompatible basalisk.