>>>Is this website filled with British people?
Yes, although as it's approaching 3am here, there aren't many around just at the moment! (We do have a few regular contributors from the USA, France, Germany, Australia, etc but they're only a handful among the many Brits who use this site).
>>>And from what you told me, then are their straight 1D fans that actually don't get judged/ridiculed for liking them? Because your considered stupid if you do in America!
Although I'm retired now, I've taught in secondary schools (= your high schools), where you might expect any such prejudices to show up, and I NEVER encountered them at all. We're generally a very laid-back and tolerant society here; if our TV stations mock anything it's likely to be politicians (in general) and religion (Christianity in particular)
If you'd prefer to see what responses your questions get from a US audience, try one of these websites:
https://answers.yahoo.com/
http://www.answerbag.com/