Meh.

Even countercultures replicate sameness.

Find someone from any counterculture and everything from his/her ideas, to their music, to the perfume they stink from are probably all exactly the same. There's really nothing new that 99.99999999% of humans come up with. I mean a 4chan user in Poland spouts the same tired nonsense as a 4chan user from Argentina or the US. Same styles of dress. Same haircuts. Even uses the same wording in their posts. Try it for yourself, you'll find yourself reading the exact same comments and posts over, and over, and over again. There's literally nothing new there. Or, as another example, when was the last time you heard a genuinely new idea from a conservative? Or from a liberal? If we're being honest, I mean, we'd have to admit that we haven't heard any new ideas out there.

So you end up with 4chan users all having the exact same crap in their rooms, and political parties all having the exact same formats, colors, and even overall look to their "conventions". You only noticed the "sameness" with coffee shops. The reality is that cultures, and even counter cultures, thrive on sameness. Without sameness they don't exist.