Is your truth, just as good as my truth just as good as anyone's truth?

In a question regarding a crisis of faith a jelly was chided for expressing their “truth” (that god was a fiction) rather than respect the “truths” of others (that god is real). Putting aside when it is and isn’t appropriate to challenge someone’s beliefs, is it really correct to designate every strongly held belief as a “truth”? Isn’t that just…truthy?

If everyone gets to determine their own truth does the designation really infer any value or authority to the belief it describes?