My understanding of the term "quiet quitting" isn't that people doing that are avoiding doing any work, it's that they are only doing what is expected of them and not going above and beyond.
With that definition, there's nothing unsavory about it.
I guess there's differing definitions. One definition was deciding you're going to quit, but not putting in any notice, and basically trying to delay getting fired as long as possible to collect a paycheck. Potentially even getting another job on top (overemployed), which sounds like it could be fraud.
With that definition, there's nothing unsavory about it.