An outright ban would break a lot of existing code out there. Deprecation may not help, as people can simply turn off the guard if optional or use an older comp

An outright ban would break a lot of existing code out there. Deprecation may not help, as people can simply turn off the guard if optional or use an older compiler if not. The problem with C is the massive mountain of legacy code that operates all of our computer systems. C is everywhere, in some form or other.