I wanted to say "FUCKING CUTE!!!", but now it would seem like I am just copying Royce. ;_;
This was awesome in so many ways! Why the question mark in the title, though...
The first time he posted it on twitter, it was that marriage montage with a question "is this Yuri?". Most japanese answers were positive and he made more, so I feel like he was testing waters, seeing what the yuri fanbase would think.
So the (?) is probably to avoid triggering the people who are not okay with it. I don't know about thai, but japanese people usually try to avoid conflict in the internet (at least on Twitter and pixiv), and considering he ignores the few posts saying it's not yuri, he's probably the same.