I think the OP is correct, though probably not in the way they mean.
I love living in Japan, but I’ll never be able to adopt that mindset, or be able to eat all those disgusting fishes they love.
That’s fine. A lot of Japanese people think it’s valuable to have different perspectives too, even if they could never convince themselves that it’s ok to just walk up to someone and ask them what their problem is.
IIUC you are saying OP is correct in that culture exists in the world. And you are affirming that Japanese people believe this too and are fine with people that don't eat "disgusting fishes", like me (cooked I can't do, sashimi I'm fine).
So the sentiment that somehow Japanese are incompatible for culture reasons, which is the message I got from the thread I replied to, is not correct in your opinion too, right?