HI, I have thousands of clients. Avg Age 55-60. Almost all of them do not like the interface of Edge, or Chrome. They find that FF with the Menu's set to show, much more to their liking as it mimics the IE look and feel. If there was a classic option, IE like, they would almost all have been happy to have started using edge and would not even know or care what is under the hood so to speak. Change for change sake is not good or warranted. When Windows 10 came out if Microsoft Browser was all new but still called IE and looked and had the same menu structure, Microsoft would still be the dominant browser being used. If not for IE not adopting modern technology and many web sites not working properly with it most would have never switched. I would say that the reason that most are using Chrome now is because IE became irrelevant and unsupported not because they prefer the Chrome interface. Changing the browser under the hood to Chrome technology will not bring back users. Edge is a lost cause from what I see.
However your logic sounds faulty, based on small number of the menubar installs. Generally folks prefer simplicity, and on smaller laptop and device screen having various bars taking space is ridiculous. Further, menu options aren't used often to begin with, especially by older folks. Save and Print are accessible from Context Menu.