“The Chasidim have survived the past 60+ years in America without a serious secular studies program”
They haven’t.
Thousands can never get real serious jobs due to their inability to spell etc.
I have a 35 year old chasidish friend, who just checked himself into night classes to learn how to READ ENGLISH.
And here is another issue. Not only do they not know how to read English, they no longer know how to read Yiddish.
So no, they are not surviving at all. they are failing miserably (in my humble opinion).