Combining same files to taskbar is a productivity killer for both technical and non technical people. In many chats when someone presents something on screen I see people struggling to find the proper document when they have few open. Same for people who do "real" work: eg budget with 10 spreadsheets opened, or few word documents... the system hibders ability yo switch between them fast. It feels as if it was designed by people who dont do a real office job.
Why do the program managers even allow to remove such basic functionality? Windows is supposed to be the productivity system and it kills productivity now.