It happens thousands of times, or maybe millions, everyday. Someone says he/she knows the truth about religion and everyone who believes something else is wrong.
There are many forms of this. When a human being’s life begins is one of them. Who the “real” god is and where the universe came from are others.
It’s almost embarassing to read or hear someone’s confident assertion he/she knows the truth when it is so obvious there is no scientific, rational or historical basis for the conclusion. I was in a fast food place yesterday getting some coffee when a gentleman introduced himself then started in lecturing me on my mistaken views. He, a conservative man of the Jewish faith, sited as his authority a Jewish national talk show host whom I have visited with personally. I find the talk show guy an air head, but his fan finds the truth.
I would guess if you polled Christians in the U. S. and asked them if the gods of other faith are real or fake, the majority would say fake. If you asked people of other faiths, they would say the Christian god is fake.
A few years ago, a young Hindu science professor spoke to our freethinker group. He explained that the Hindu faith, unlike the Christian, had been tested for authenticity. No other religion, he said, was based on such truth.
The attached link explains why yoga is part of the “demonic Hindu faith.” Ignore “truths” based this hooky thinking.
Instead live with unanswered questions. That way you can keep on learning.