Self identifying with a political party erodes critical thinking skills. Unless you can criticize the stupidity of all, including those you vote for, you are limited by your own stupidity.
Self identity ignorance is prominent in religious cultures where the church must be protected. The congregation will protect a priest or pastor that is sexual predator and pretend their actions didn't take place to protect their community. They loose their identity when their church is harmed, same with latching to political parties.
I agree parties shouldn’t be so ideologically rigid, and for the most part they aren’t. Jamie Dimon and AOC are both in the same party, as are Marco Rubio and Tulsi Gabbard. People who refuse to work within a party unless the party agrees on every issue are simply not interested in outcomes. That’s fine too!
Also, Harris campaigning with Liz Cheney suggests that her campaign thought that Romney 2012 voters were their marginal vote.
Hawks are by no means the majority of democrats, but Romney 2012 types are the margin democrat voter. And while the majority of democrats aren’t hawks, the party’s dominant principle as of late seems to be trusting credentialed experts, which makes them suckers for the intelligence community.