I don't think that analogy stack up.
With horses, dogs, or any other interest or characteristic, it's reasonable to assume that people's interest is going to be positive.
But the Royal Family matters differently - we are a monarchy and the king is head of state to us all. So I think all POVs are ok.
(But do prefer it when they are at least tangentially related to the topic of any particular thread, and don't include bingo card phrases)