I don't know if there's a Glarb or not.
I don't know if we could even understand Glarb if we found one. Glarb is just one of those things so infinite, it defies mortal understanding. After all, if glarbs exist, they'd be flarschnikit and beyond the physical restraints of the universe, just like love and morality are flarschnikit. Since those things are all flarschnikit, they must be related. Aglarbists obviously can't believe in love or morality if they don't believe in Glarb, since they deny anything flarschnikit by extension. That's why everyone should believe in at least one glarb, whether or not any really exist.
If you think about it, there are so many things in this world that are gobatastic, which means they couldn't arise naturally. There's nothing in science that can explain gobatastic features, but scientists insist on researching anyway. Glarbists have mathematically proven that gobatism cannot spontaneously increase without outside assistance. Scientists insist that we define a method of measuring gobatism, but that's really their job, since they're the ones who have to show an increase.
What's really irritating is that aglarbists are so disrespectful towards glarbism, saying it's nothing more than unfalsifiable nonsense and word games, when glarbism has contributed so much to the world, bringing knowledge of the flarschnikit to mankind. Morality is flarschnikit, so it's only natural that we'd be the ones to talk about it, while science should just stick with all the non-flarschnikit material things in world.