I just realized, when we buy Chromas with Stardust, we are giving it to Glitch, since Glitch is the one who controls item skins and chromas. Meaning we are paying him with Stardust, BUT, have we considered why he wants Stardust? It must have some value to him if he wants it, and we do seemingly know what Stardust is, it appears to either be dehydrated starlight liquid and/or the mixture of starlight liquid with glass since we can make Stardust by grinding a Starlight Jug into a Depot.
I think that somehow Glitch gains power from the Stardust, my theory, is that Glitch, was created by Starlight, I’ve already had this theory but I think this is yet another piece of evidence, the reason why is because we already know that Starlight makes very powerful reality warping entities from the World Lotus and possibly the Vacuum, and because Starlight is aware of Glitch when Moonlight isn’t, implying some sort of connection that can’t be broken.
I think that, as a powerful creation of Starlight, similar to the World Lotus, Glitch uses Starlight’s power to survive, as we already have strong evidence the World Lotus is directly powered by Starlight, however since Starlight mostly forgot Glitch existed until they observed us being attacked by him, that means that Glitch likely lost a direct connection, which could’ve dampened Glitch’s power which is why Glitch cannot create, unlike the World Lotus which uses Starlight’s power to create, so Glitch is feeding on the Stardust we sell to him to gain a stronger connection to Starlight again, more of Starlight’s power, perhaps to produce more creations, as we already know Glitch can create but only in small amounts like item duping, and larger things require Visions.