He is on the mark that it's presented as a more subtle, understated scene compared to the comic effect of, say, the Centauri religion. It's the only moment in the episode to shoot for gravitas. Obviously that's because human religion is the only one anyone's touchy about.
Diversity is hard. With many space operas, cultures are the defining difference between major races, not anything else, and Babylon 5 follows this trope to the letter; as indeed it also does in taking inspiration from real world cultures (as I've already bloviated about).
Except, JMS, that the only reason that only humans are diverse is because you couldn't be arsed to think up more than one religion/culture per civilization!
Diversity is hard. With many space operas, cultures are the defining difference between major races, not anything else, and Babylon 5 follows this trope to the letter; as indeed it also does in taking inspiration from real world cultures (as I've already bloviated about).