I mean it all depends on what they do. 3 hours a day of coding is huge amount of work. 3 hours a day of zoom meetings is meh.
They are living The American Dream that Homer Simpson made us all aspire to. It may not last but at least they were fortunate enough to experience it for now. (I wanna be there :/ )
Homer was kind of a nuclear reactor SRE if you think about it.
He was ahead of the curve in so many ways including quiet quitting.