Cheney, for as much of a tool as he may be, at least hasn’t shown himself to be fully engulfed in the maga cult and recognizes that allowing Trump into power is a legitimate threat to the entire system. It’s less of an endorsement of Harris and more a rejection of Trump.

Edit: To touch on the ‘eventually’ aspect. I don’t want it to sound like an excusing of the slow pace of change in our modern world, but put into context that the USA is, by global comparison, a young nation. Look at the time spans that nations in Asia or Europe have existed by comparison and the length of time it took to change their ways, often through drastic social upheaval. In comparison the gains in social equalities here have come at a rapid pace in the past century. For a place founded in violence and oppression where it was originally codified law that only white landowning males where of consequences we’ve made some notable improvements in the span of a few generations. As it stands today we’re in a space where there are people legitimately clamoring for a second civil war due to the inability to find consensus on any number of issues. So many things that are common sense to the rest of the world are considered alien here, deemed ‘un-american’. As we move along the road people come around to these ‘radical’ ideals, but it often takes a generation for them to become the norm.