Not necessarily true. There are lots of good, conservative people fleeing the shithole states.
I agree; Trump won 40%+ of the NJ vote in both 2016 and 2020 - and THOSE are the people who have to leave. The gubmint worker caste and the welfarians are the others (the Dem base), and they either can’t leave (the former) or have no reason to leave (the latter).