Now seriously, it's probably due to cultural differences. Is profanity that frowned upon on the US (or wherever you're from)? It's surprising how sensitive the US is towards profanity for a country where "fuck" is used extensively in media.
I literally didn't think anything about the domain but it's probably because lighthearted profanity is much more pervasive in my culture, where it's used as an emphasis tool (and less for its shocking value in media). We don't censor (beep) swear words on TV either (which BTW seems ridiculous from our point of view).
Yes, I'm not going to swear in a professional setting, but I'm not going to think less of someone for their use of words. Words are just words. Swear words don't hurt me any more than non-swear words if they're not meant to hurt anyone.
It's a simple "fuck yeah". It's supposed to be an expression of joy. How does that hurt you at all? Why would it make you less inclined to click on it? Genuinely curious.
EDIT: Also, regarding that "what if there were 5-year-olds visiting this site" point I've seen elsewhere... In my country everyone swears and children aren't traumatized or anything. As soon as kids are old enough to recognize the subtext they refrain from swearing (in front of adults) themselves.
Don't swear in front of toddlers though. They'll repeat it over and over again.