In the creators notes:
"Ganymede was also a cupbearer to the gods, but never considered an Olympian"
ecce! vino bene!
where did he get hes idea from?
They got millions of kids, including many people who took this quiz judging by the comments, into learning more about Greek mythology. And most importantly, they got millions of kids into reading, because they were funny, engaging to younger readers, and inspired further learning.
You sound like a snob who hates that they aren't special anymore for knowing this stuff, and you could really use some series self-reflection on why you rely on knowing things others don't to feel good about yourself.
one point is that certain misconceptions can arise. Atleast the audience know they are gods. Many mythological names ( often the more obscure ones) are used for video games, and there are millions and millions of kids that know certain names only from videogames and have no clue where it actually comes from and the backstory. That I dó find a sad thing.
Also, had to google the spelling of Asclepius.