You can't use Google Maps to determine the age of a field.
You definitely can't use it to determine
ancient shipping routes but KotA is somehow under the delusion that he can look at features on the floor of the Pacific Ocean (a mixture of low-res data for most of the ocean floor and long tracks of higher-res data from ships that gathered higher-resolution data) and determine they are actually some sort of navigational tool for directing ancient people towards inland forests. Or something. He's Gish Galloping from one idea to the next so fast it's hard to keep up with and remember just what it is he's claiming, especially when he goes out of his way to say he's not claiming anything (until an International team of archeologists, dendrochronologists, oceanographers, etc. accedes to his requested and starts doing sciencey stuff on his behalf).
As usual, he's very careful not to actually say what he think's he's looking at. Those supposed straight lines he's following are:
1. On the bottom of the ocean floor, thousands of feet below the ocean surface.
2. Kilometers wide and thousands of kilometers long.
3. Look more natural and rugged and detailed than the surrounding ocean floor, the reason for which is obvious. The surrounding ocean floor in Google Earth was composited from low res data, so it looks relatively smooth and flat (the ocean floor is not actually that smooth and flat) but the long tracks look more rugged and craggy because they are higher resolution scans of the ocean floor and thus reveal the kind of data that's missing for the rest of the ocean.
4. KotA has acknowledged that 'some' of the lines are from these higher resolution scans, but he thinks some are some sort of ancient 'guild post' lines or something or other. Not only won't he actually say what the ancients built and why, at the bottom of the ocean, he refuses to identify which ones he think are real and ancient and which are just artefacts of tracks of higher resolution data in Google Earth.
The idea that ancient peoples carved out canyons and ridges for stretches thousands of kilometres long and kilometres wide, on the bottom of Pacific Ocean, as some sort of aid to people navigating by ship on the surface of the ocean (or perhaps he believes ancient peoples traded via a network of ocean floor caravan routes, who knows what he thinks when he refuses to say) is of course too ludicrous for words, but he thinks it's true while simultaneously getting all hot and bothered and resort to ALL CAPS mode when confronted with the idea of modern tree plantations carried out by modern governments or modern businesses.