Players sometimes notice maps that are already public that don't meet some of these requirements. Older maps that were created before these requirements existed are grandfathered in, such as the Wheel map that does not have bonus links or the United States Big map that had tiny territories. The presence of the old violations does not exempt new maps from the requirements.
What maps are already out there is irrelevant. A lot of older map(s) breaks many of today's standards.