I wonder if they are having this same debate in Japan and how that poll might look like.
From my limited look online and on Twitter it seems like to some extent yes. On first seeing Sasha they thought girl. And they have seen the English name and know it is commonly used for girls here (but can also be a boys name)
I
think more people seem to think boy, because of the Japanese name Mitchell. (Like I said somewhere else, so sorry to repeat, I saw someone pointing out the actor named Sasha Mitchell, which was funny. - the character is definitely not based on him though, he has a not great past). When you google the name in Japanese it comes back as overwhelmingly a male name.
But my glance was by no mean definitive and I saw not too much actual debate. Just people wondering.
I saw one poll of what personality he would be (only out of male personalities in this case) and lazy was winning by a lot, with 48%.
there is a screenshot floating around with Sasha appearing to talk and use the first person pronoun ‘boku’ (which would make him lazy) but I am pretty sure it is fake.
they are also widely sharing the same theory as us, regarding the order of the villagers in the new amiibo set, by alternating male female and by personality.
It is also easier to avoid using pronouns much in Japanese compared to English, so many posts were just gushing about the character being ‘too cute’ with no need to specify gender.
(Side note, something I realized when resetting my second island in Japanese. They really have not taken gender out of the base game as much as it seems in the English localization, you still choose to be a boy or a girl in Japanese.)
for those who want to take a look you should be able to paste in this hashtag (and then can do your best with twitter’s translate feature, which is okay for what it is)
#ミッチェル