” If sea level rise isn’t equally distributed there can only be two reasons.”
A third reason is salinity, which is gravity-related. Where a freshwater river runs into the ocean, the water level will be higher as measured by satellite, because the fresh water is not as dense. The opposite happens when seawater is more saline than the average.
But for the most part, the level is close to the same all over.
The science deniers will deliberately confuse erosion, ground sinking, and storm surges as “proof” that the seas are rising and we must adopt a global communist economy to stop it.
Yes, salinity would also be a factor. But we’re told that AGW causes less rain, so we can rule that out ;-)