Perhaps inspired by an arbitrary renaming (or reframing?) of a large bay some Google Maps users tried to create new "Gulf of ..." or rename existing entries for often small lakes or waters which have a different name already.
In Germany: what started with "Golf von Wächtersbach" found a lot of copying actions at other places (link to article in German language). Google Maps started to react on this.
For travelers this is a reminder that Google Maps is a tool which is not professionally edited. Therefore travelers shall always be cautious to skeptical about authentication, correctness and actuality of information in this tool.