Now that DC’s setting and canon are expanded in the way of valkemarian lore, little of which is formally presented on site, pretty much everything in dragon descriptions and the gameplay premise of the site is like... “old canon.” I don’t see a compelling reason to enforce style or consistency on player dragon descriptions. If someone cares enough to go through the energy to write an excited blurb about how their aeon can travel through space and time to earth 1988 to dance in post soviet discos, more power to them. Valkemare couldn’t support the biomass of the bulk of player dragons, one player couldn’t raise as many dragons in a lifetime as people have on their scrolls so it only stands to reason most individual dragons aren’t canon to begin with.
I’d recommend automated filtering for profanity and urls, an internal queue where mods can quickly browse “recent descriptions” if need be, and a big obvious report button on the view page on described dragons for players that find The Bad Stuff when mods don’t. Otherwise proceeding with the assumption that most people aren’t yikesy trolls is probably a good mindset.