So true!
And, If the weight of ice on Antarctica, or Greenland were removed, the land itself also rises! It's as if these people think the Earth is not Dynamic, ever changing!
That is called isostatic rebound. It is the reason why most of the lower U.S. has few lakes and Canada has a gazillion of them. When the huge two mile high ice mass retreated (melted actually) ten thousand years ago or so, it left some huge lakes in its wake. Like glacial Lake Agassiz which covered much of northern Minnesota and Wisconsin. Now there are no huge lakes inside Minnesota and Wisconsin boundaries. We have the Great Lakes, and Canada has quite a few . But in another ten thousand years or so if the the rebound continues many of these huge lakes will drain as the land rises.