It's applicable to any factual claim, so it's applicable to any religion that makes factual claims. A few don't, but most do.
I believe we've been down that road before. I disagree that "most do", since I include the thousands of indigenous traditions that people assume are "unimportant", but in this case, I'd direct the application to the claims themselves, independent of the religion surrounding them. Despite what literalists perceive, it's entirely possible to follow plenty of religions without certain events having been literally true.
The paradox of atheistic theism is becoming more and more a thing, which I'm very pleased to see.
It can be dependent on many things. Even if the day-to-day experience of a religion doesn't focus on its claims being true all the time, that experience often takes various facts as given that underpin the other aspects of the religion.
So when a religion claims as one of its tenets that it's true, you disagree, or at least consider it wrong-headed? You disagree with those religions?
The claim, yes. The religions themselves, however, are just what they are. Consider that I disagree with many things the US government says, but to call the US government itself as inherently "true" or "false" doesn't make sense. (Would this be semantic sense? I'm not actually sure.) This analogy is mostly compared with organized religions, since they're the ones that do the majority of fact-claiming.
Or, back to religion, let's consider my religion: Heathenry. Heathenry is 100% decentralized, with no central authority, no single organization that speaks for everyone, and very little in the way of a priesthood. Heck, the first Heathen temple in a thousand years isn't even built, yet.
Now, being a Heathen, I obviously don't think it's "false". I don't think it's "true", either, because as I said, I don't think this status can apply to religion, but put that aside for a sec. There are Heathens who make fact-claims all the time, such as various bare minimum requirements to be "Heathen", whether it's open or closed, etc. I firmly make the fact-claim that Heathenry is open to all, thus strongly believing the fact-claims that it's closed to be false. But, though I STRONGLY disagree with that idea that it's closed, that doesn't mean I believe the Heathenry people who believe otherwise follow is somehow "false Heathenry". They're still Heathens. They just also happen to be highly misinformed.
Wow, did you ever guess wrong.
That, we agree with.