How Long Do You Suppose It Would Take the Continents to Erode Into the Sea Does It Fit Uniformitarians’ Model?

The estuaries growing at the mouths of the world’s rivers (expanding deposits of sediments in the sea) would cause the ocean to completely fill with sediments within about eighty million years if there would be enough sediments from the continents to do that, but the mass of the continents (above sea level) would be eroded into the sea within fifteen million years, rendering ridiculous the uniformitarians’ model for the age of the earth in the billions of years.