I think the point was about the frequency of switching your frontend. With a proper frontend you can switch the backend on each request if you want, but usually people will stay with one main-interface of their choice. For AI, OpenClaw, Moltic, Rowboat are now such a frontend, but not many will use them all at once.
It's similar to how people usually only use one preferred browser, editor, shell, OS.
It's similar to how people usually only use one preferred browser, editor, shell, OS.