Chilean here (therefore technically not white)
I mostly agree with a variety of points other users have already made on this thread.
I don't think blaming the forum and the implicitly intended target demographic of it makes any justice.
Haven't had much experience with like regular actual white people, at least in person, but I suppose there's plenty of cultural things going on, both historical and geographical too. Mostly thinking about how western philosophies tend to come from the northern hemisphere, specially europe where white people are the most prominent and so I think that our western ideals of individualism, freedom and liberty (specially about romance and sexuality), romanticism and love, caring about nature and animals, having pets, how we've trained and raised animals for millenia to help us and the special connections we develop with them are kind of an ingrained feature of people perhaps and from that arises the love for animals.
Not to mention that as technology progressed, so did the ways in which people worked and made things. We stopped relying in animals for heavy work and/or transport and as such we began to take care of them, have fun with them, love them more and grow together. This may be a giant contributing factor to the proliferation of animal love. The introduction of mass media allowed us to broadly provide ideas to societies all across the world and thus, even if people still bash zoos, the transfer of ideas on short timespans across long distances allows us to share knowledge en mass and communicate with people from all sorts of places and backgrounds, letting us connect and figure out that we're not alone.
TLDR due to the circumstances of history making white people do a lot of interesting stuff, they've developed a more interesting connection with animals and have also had a better mindset to engage in mutual sexual pleasing with our animal partners. Maybe the predominance of christianity and taboos also made us more interested in exploring our sexualities because we're uncomfortable with it and see that different cultures have different rules and therefore that inspires us to be more adventurous.
idk I just love to think that it's a natural part of humanity and that us mixed peoples have won the lottery as we've been introduced to the wonders of western ideals and our ancestors who had families and mixed up with europeans had a more intense and overall connection with the forces of nature as a whole, and thus we have both a special connection with mother nature and her beings, as well as ideals that allow us to abstract and understand our special deep connections with our natural lovers.
Hope this isn't too much of a weird ramble lol