Sure...if kids cartoon weddings means that they're being taught about animals ******* then why beat around the bush...show them what goes on.
The point is that kids realize their hetero parents are responsible for their existence. The specifics are not advisable at that age. Facsimiles in the form of affectionate animals is not a bad metaphor.
Throwing homosexuality into the narrative is confusing to kids and potentially obscene.
The parallel of upsetting homofascists by resisting the homo setting and animal rights extremists objecting to the objectifying of animals is sarcasm but still accurate.
The ultimate point stands; homofascists are extremists and are bad for children.