I feel that way about the default GNOME apps as well, they all provide the basic functionality that most users need, since specialist users would install specialist apps anyway.
One extension I won’t install is dash-to-dock or similar (I know some people like it and that’s fine), because being made to switch to the Activities view once you have too many windows to alt+tab between provides a useful psychological prompt to close unused windows or move stuff to other workspaces. That’s one of the things I most like about the GNOME workflow.