But I don't have any meta-belief telling me to hold onto given beliefs-that-seem-implausible-or-unverifiable because I'll be rewarded in the end or because it's a test or whatever. I don't continually change whatever belief I know is arbitrary but that's because consistency has some utility so point remains.
Basically, I have no trouble with non-rational beliefs and behaviors. But religious specifically espouses irrationalist beliefs - irrationalism being the exhortation to keep, cultivate and fixate beliefs beyond the rational. Institutions other than religion, various flavors of Stalinism say, promote faith, fixating one's beliefs and so-forth. I'm against those too. But a wide variety of secular belief systems are against the irrationalist approach - some versions of liberal religion try to escape it too but as people observe, these folks are kind of becoming non-religious.
Edit: Just generally, "everything not-wholly-rational is a religion" is a slippery argument that's being way-abused in this thread.