I'm saying that centre-right Democrats can be trusted to push regressive policies. They simply won't push as hard as Republicans. Any progressives policies are going to be forced upon them, unwillingly, exactly as they would be forced upon Republicans. We don't have to regard ourselves as part of their coalition, or treat the integrity of that coalition as an imperative. We make private electoral pacts in the voting booth, but that's far as it goes. As soon as the election is done, people like Biden reoccupy their natural and inevitable place as enemies of progress, and must be combatted as such.