This isn't building bridges though. No Republican is going to be moved or softened by this statement. It's going to actively alienate the people who are supposed to like you though. The best move is to simply say nothing at all.
All this bullshit tells me is that those in power are still seeing this as nothing but business, like what we're going through is simply a contract negotiation. No hard feelings. That they can watch their colleagues cause the death and misery of thousands and then leave that at the door and go grab a drink with that person.
It was Harris' choice to post this publicly for people to react to. If it was simply about being kind then it could've been a private communication to the Cheney family directly.
It was performative at its core and woefully out of touch as well.