No it's not. There will be tens (hundreds?) of thousands of kids who watch this and later turn out to be LGBTQ, and for those who come from anti-LGBTQ families, it may be their only exposure to the idea that it's OK to be gay.
It's a children's cartoon, I don't want a cartoon flaunting sexuality, I want them to be entertaining to my (hypothetical) children, not teach them the message of social justice.
So you don't want any straight characters in any cartoon? Really??
I don't want the characters sexuality to be known in a cartoon? Why? Because it doesn't matter for god's sake.
Do you think, for instance, that Arthur's parents' sexuality isn't known?
