It’s also reported here. This fits with the reports of complaining that Democratic Congresspeople have been doing about the progressive wing of the party wanting them to fight back against DOGE. They and party leadership may well be aiming to not just talk like it, but fully become the new Republican party, in hopes of having a stampede of “moderate” Republicans who aren’t happy with Trump come their way.
Also, big donors are angry at them, so I guess they’re trying to win those donors back.