Those are some pretty crazy analytics. I think the 18-24 is mostly just because people who have made an account have probably set their age up to older than they are to avoid any sort of age restrictions and etc. I know I have. Java players who would watch these kind of videos are probably more tech literate so know to do those things.
The gender just seems completely wrong unless It's nearly all boys that have actually gone and made an account? You've seen how many kids (mostly boys) are wannabe youtubers.
What is surprising however is how those top 5 countries only make up 50% of the views. I don't know if unknown is on that list and not featured in that top 5 for some reason or there are just many countries with a super small viewerbase.