None of these “scientist” have been able to answer these simply questions yet.
What is the “correct” sea level?
What is the “correct” amount of ice?
What is the “correct” global temperature?
The climate of the past 20 million years or so has been due to continental drift; namely Antarctica moving over the South Pole and South America connecting to North America and closing up the Pacific-Atlantic warm water flow.
Some day, Antarctica will drift out of it’s bottom of the Earth position and the 20 million year ice sheet will melt. Australia and Africa will move north to create new Himalayas-like mountain ranges, and South America will no longer be joined to North America.
And that will be normal, too.