You may not say science explains everything, but there are plenty of people who say science is the only way to learn anything, and if science can't find it, it doesn't exist -- some of them are on JUB.
Reliable knowledge isn't what becomes a religion, it's trust, reliance on that knowledge for everything you need, physically and spiritually and all. So if you trust in pokemon, and look to it for solace, and give it honor, then it may well have become a religion for you.
The essence of religion isn't ritual, it's looking to something as the source of the things you need -- which is why the Libertarian Party "decr[ies] the cult of the omnipotent state": many people in a nanny state look to the government to solve all problems, provide all needs, grant security and comfort. Religion does tend to sprout rituals, but they aren't necessary, and on the flip side, the presence of rituals does not necessarily point to a religion (it may point to obsessive-compulsive disorder, for instance).
Imo, our reliance on science is purely physical, which is why a big portion of science is called 'Physics'.
I don’t know anyone would rely on science for their spiritual needs (I am not saying this kind of people don’t exist). 'Spirits' is not a branch of science, studies related to spirits are metaphysics - 'beyond physics'.
I disagree with your argument that just anything can be a religion. I think most people would disagree with you too. Physics is science, Christianity is a religion, Confucianism is a branch of philosophy or arguably a religion, pokemon is cartoon.
Your saying that anything can be a religion is like saying anything can be shoes. you can strap telephones to your feet and walk with telephones as shoes. That still doesn't make telephones.. shoes.. It's not wrong to do that but it's certainly not right.
I also disagree that science can be a religion, as would most people from the scientific community.
Science is knowledge gathered to explain (in the best way we can) how this universe/ultraverse/multiverse works, not to feed humans physical/spiritual needs.
We never say that if science cannot find something, it doesn't exists. In fact scientists often theorize that something exists before they are able to find it. Laser is one example.
Einstein postulated that light bends with gravity, there was no way to prove it back then, and today we know it's a real effect called gravitational lensing.
We don't say G-d doesn't exists, we say - prove that G-d exists. I'm sure the scientific community would be really happy if someone can really prove (really prove, not because the bible says so) that G-d exists, because that will solve most if not all our problems.