The Democrats really saved their big ammo for RFK Jr.
They really did a shitty job on Pete Hegseth, I think they would have preferred that guy not get confirmed. Seems like the shitty job was unintentional, they spent a lot of time on his drinking and infidelities, in an ineffective manner, instead of really digging into his qualifications. Maybe they were just feckless, but Hegseth isn't going to last so it's not a big deal.
RFK Jr they are really drilling into the ground. He's an easier target an more important to block. Ironically, they are really getting after him for his earlier statements supporting abortion (beyond the levels generally seen by most Democrats), to try to give the GOP Senators an out.