Maybe it is more than an instance. Maybe it is an idea, a world-historical vanguard, light itself. 
actual attempt to answer (cringe)
We’ve been around for three years on a lemmy fork before federation. The lack of federation for years as well as the place we splintered off from (/r/chapotraphouse) already having a unique microculture within Reddit has given this instance, in my opinion, a distinct culture compared to general-purpose and even other hobbyist instances.
Regarding specifics, Hexbear is a vehemently queer-friendly/intersectional anti-sectarian socialist instance. Check us out 
i have seen many times a .world user post something about china there is like 5 users from diferent instances talking about how "they cant wait for those hexbears to defend the cpc and spam emotes" we live rent free in their heads
They wouldn't say CPC tho
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I think it may be their only interaction with another person, they crave socialization so they get mad at us.