Dear Avirah,
פן יש בכם….. is referring to Bittul Torah. Or rejecting the Torah.
This is basics. The problem is Yidden that reject everything and don’t keep any of the Torah.
No matter what their approach is to understanding the world around them.
No matter if their culture of art, dress, food, .. mimics the world around them
That is two separate sentences because they are completely different. And either goes just as well with the opposite of the other. You have been making one mix out of all this. Maybe because your opinions don’t stand on their own merits. So you use them to prop each other up. The only result is that I end up attacking your well meaning ideas more than I want to. You are not doing any favors to yeshivishe hashkafah by drawing such heavy lines and then trying to knot them in a bunch.
The fact of Tanach is that, the Yidden completely rejected all of the Torah. It’s study, obligations, meaning, and purpose. And in our day this is still an ongoing fact.
Stop making it about ideals and culture.