Seems like you're overloading the word religious to mean an idea that someone holds either very strongly, has a philosophical component or believes on faith (e.g. insufficient evidence or not thoroughly examined). All of this could be true, but that's not really religion.

As defined, religion is "the belief in and worship of a superhuman controlling power, especially a personal God or gods.". Nothing about a strongly held belief, even one lacking evidence, makes it religious.