It depends. Our society has always gone back and forth with conservative and liberal stuff. The pendalum constantly goes back and forth. The under 30’s might be our only hope. I am 43 so in 30-50 years, I will be 73-93 if I live that long....Maybe 73 but doubt 93...if it gets any worse, I hope not to be honest.
I don't know what you mean by that, immigration has mostly led us left since the 1840s and the immigration of the last 40 years is so large and overwhelmingly and never ending that it ends any chance of cycles.
The under 30s spell the end of America, not it's hope.