I agree that not integrating is a stupid idea.
I’m 21 and made aliyah as a teen. I know loads of people my age. From those who integrated and haven’t . Grown up here or made aliyah it doesn’t matter.
Even if they manage to marry within their bubble most of these people who dont integrate (Id say 90%) are resentful of the system and are confused on some level.
Whether or not you think the system is right or wrong, its the reality and being resentful of an overarching society is something you should grow out of in your teens. Not something you should be thinking of when you are 40 or 60.
I dont think you need to lose every part about society. No one said that. You just have to work with it and live with it.