National Geographic: What the world would look like if all ice melted

[JEMC]

Sirius87 said:

As a result of the drastic rise in sea levels, the average temperature around the Earth would rise from 58 degrees to 80 degrees.

Did they consider the thermal expansion of water for the pictures? Afaik it is of similar importance for the rise of the sea level as is the melting of the ice (in realistic climate models).

And with the higher temps, wouldn't there be more evaporation that would lead to more clouds that would mean less insolation so less heat?