Yes I am, because like it or not, I and a lot of fans here think that is silly. And the only reason that Xil is defending it is because she thinks everyone in her own words, should just be bisexual out of convenience anyway.
"A lot of fans think {blank} is silly". You can fill in the {blank} with pretty much anything and you'll still have an accurate statement. That's not a compelling argument. Especially when I can counter it with "A lot of fans don't think that it's silly" and be just as correct as you.
I personally prefer a variety of sexualities. But I see absolutely no issue with four bisexuals being a small group of random people. It's not really that interesting or shocking. Small groups of random people aren't representational. So that's a silly expectation to have.
Here's my example: I work at a job that has nothing to do with my sexuality. In my job, there are 6 guys. Three of us are gay. According to your logic, this is inconceivable. But, since it's a random small sample, it's not statistically sound and can't be expected to be representational. And it happens. So it's not a big deal.
What's the breakdown in gender? Studies show that around 1/1000 people is asexual and over 70% of them are women. I don't think asexual would really factor in that much, but 43% is also depending on sample size, the geography, the population of the area. I would take it with a grain of salt.
Sample size is over 1600, so that's a totally sound number from a statistical standpoint. It's more than enough to account for other factors.
ETA: I did a little more digging on the study and found out that they did use the Kinsey scale as one analysis. But that was only one that they did. They also asked a series of qualitative questions and asked people to answer them, then analyzed those results based on ages as well. And, using that methodology, 49% of the 18-24 year olds identified as "not completely heterosexual". And only 7% of people older than 64 answered the same way. Again, I'm saying that half of the population is not straight. But I do think that this study (which seems methodologically sound outside of that one analysis category) supports the idea that the societal views on sexuality influence how likely individuals are to self-identify as LGBT.