They act like a mutual admiration society at every meeting.
mutual admiration society
idiomA group of two or more people, in a workplace or other social environment, who routinely express considerable esteem and support for one another, sometimes to the point of exaggeration or pretense.
The two coworkers formed a mutual admiration society, constantly praising each other's work while ignoring everyone else's contributions.
The board members operated as a mutual admiration society, offering endless compliments to one another to ensure their collective decisions remained unchallenged by outside criticism.