Is truth so all-inclusive that it doesn’t really matter what you believe as long as you are sincere? We wouldn’t say that about scientific truths, but what about religious truths?
In particular, are the distinctions between the various religions so minor that it doesn’t matter which one of them you believe? Or any of them at all?
These are questions that arise in a pluralistic society such as we have in the United States and much of the Western world. Pluralism accommodates differences, celebrates diversity and promotes inclusion. Pluralism, generally, is a good and wholesome thing in a civilized society.
Whereas, people with differences once harbored hostilities toward one another, and waged war and walled each other out on the basis of those differences, a pluralistic society tolerates, accommodates and even celebrates diversity.
Pluralism allows people to live as they see fit to live and as they believe they ought to live, within reason of course. (My right to live as I see fit ends at your right to be free from my intrusion.) Pluralism maximizes liberty and freedom and allows people choice. Pluralism is a necessary construct in a free society.
Truth, however, is not so inclusive. We don’t accommodate any or all theories in science. We don’t tolerate views in science that compete with proven evidence without equally compelling evidence to the contrary because truth matters to the scientific endeavor.
Truth is what it is.
This is not to say that people aren’t free to adopt their pet theories, but pet theories are not relied upon by a circumspect scientific world that is trying to launch probes to Mars and program vehicles to drive by themselves without killing innocent people. In the same sense, if truth matters, and if there is any truth to be found in religion, we defy logic and common sense to say that one religion or set of beliefs is just like the next. And the consequences of failing to discern fact from fiction may be just as dire.