The Grenwich meridian was in the wrong place anyway, it was 100 yards out.

When Greenwich was settled, France abstained because they wanted a Paris meridian. When arguments rage, there's always some group or other advocating someplace else as the prime meridian.

As to time, they've already tried to cut out GMT and instead refer to UTC but all time standards really start with GMT. Arguing for arguing sake will always produce those with an argument for everything and a reason for nothing except more arguing.