there's a sense of quiet quitting at my customer site. it has always been, but wasn't formally called "Quiet Quitting".
consists of the gov civilians doing just enough to get to retirement. most of the QQs are within a couple of years of final exit.
the reason, one of the oldies mentioned, is the promotion process is bureaucracy central, plus a lot of sucking up to superiors. then you have to sell yourself in words, and how the impact of your actions benefits the self, the team, the division, the agency, etc. the process starts 90 days in advance of the promotion day. the contractors immediately sense when the govy goes into IDGAF mode on the projects and starts asking for metrics to incorporate into promotion cycle. It used to be a very simple process, but over the last decade, it has become increasingly sycophantic, as in the corporate world (I know because I used to work on that side prior). The old ones are tired of the shit, they are technically very good, and there's going to be a brain drain, because the younger ones don't care about being technically good, just want to move fast up the ladder. Oldies won't get fired, haven't done anything wrong, and several are single points of failure. And they aren't training replacements because superiors don't want the youngins to learn the technical skills.
Which means, they have to get contractors to do the technical heavy lift, pay them more, and also get to bitch about the contractors getting paid seemingly obscene amounts (which isn't true).