I literally wrote above that such franchises prefer the status quo, periodically adding fuel to this or that ship. The key difference is that it's nothing more than fuel, or often even just fanservice, rather than some kind of "implication" or "canonical" promotion, as if you can non-canonically promote shipable pairing, lmao. They've also promoted a bunch of ships in their time, and they're still nothing more than canonical rivals or friends. Starting with Silence Suzuka and Special Week themselves.
Even if we put aside the pressure from horse owners, this is a franchise for everyone, and they offer people a wide variety of experiences that they can do with as they please. It's much more diverse and interesting than the obsession with the search for some one true dogmatic canon among Western pro-shippers. For example, you could ship McQueen with Goldshi or with Café. Or simply consider all three of them friends with a fun dynamic. It's all up to you, and this approach isn't new or unique to Japanese media.
This mini-arc, among other things, deliberately emphasizes their status as fateful rivals on the same field, rather than some sort of actual lovers or anything else. Cygames obviously won't mind if you interpret them this way, but don't let yourself forget the context around it (including the event's one from which you took this CGI), like those weirdo trolls above. Especially when your comment itselfs seems to imply mocking, as yuri fans consider any shipable friendship "implied romance" because they can't prove it outright.