Depending on what he said, I believe he is actually right, it is a phenomenon that happens bc of gravity.
Just like the water in a cup "sticks" a bit higher on the sides of a cup, the seas "stick" higher to where it is closer to landmasses, bc gravity is stronger there than say around the area of the Mariana trench, for example.
/r/explainlikeim5 may have a better explanation about it tbh.
I guess, if tide heights have stayed, on average. The same around the equator.. Then nothing has changed. Is there literature showing weaker gravity over deep ocean?
Found this after a quick search:
https://www.youtube.com/watch?v=9hciQPtNhD8
Unsure if it's accurate, but looks legit when skimming through. There is a bunch of sources at the bottom, so you can have at it.
I think at that level there are things we don't experience that must be accounted for.
Yeah dunno, will prob watch that vid i sent later
