I asked the kids what they thought about this and no one knew anything (well the girl not knowing didn't surprise me, she's only recently gotten back into roleplaying, her last time was when she was 6, the boys maybe just didn't look into that bit of dndbeyond as most of what they use it for is character creation).

Youngest went and had a look as he's the one with the obsession and he couldn't find it, then got distracted by Spelljammer XD