This would violate POLA and break, among other things already noted, things like fingerd, which wants to run with least-privilege but still access .plan and .project files.
Security is a process and requires conscious thought by an administrator, and default permissions on home directories are no different and easily tailored away from the expected defaults. -- Mason Loring Bliss (( If I have not seen as far as others, it is because ma...@blisses.org )) giants were standing on my shoulders. - Hal Abelson
