That's definitely the romantic option, and I would think it would be very sweet if that's how it all went down. Like, very cute bromance scene between two developers lol. We could meme it up and play some music later depending on how it looks

.
However, there is a flip side to that, which is Matsuno never put male viera into the games because he doesn't like/want them.
So if Yoshida goes "Male viera, you in bro?" and he goes "... I made three games in that universe (the one I lead to create), with many viera characters, and a village, and you think I want them? No, of course I'm not in". In which case two developers have just sat on top of the idea of male viera. I find it likely he didn't really want or at least doesn't really care for them if he made three games without a single male viera to show for it.