Ah, but it is. Imagine the economic, social, and political catastrophe that would ensue if the current sea level is only raised two meters from what it is now.
Dutch dikes are 2 metres high, anyone can build them.
Plus you have to takes this in mind for Northern Europe, we have our climate because of the warm gulfstream. If the landice will melt cold, not-salt water will interrupt that gulfstream, that means this area will get far colder. Maybe even as cold as in the Younger Dryas (that's a drop of 20 degrees (in Celsius and Kelvin) in 100 years). If that happens ice will start to form and the sea won't be that high, besides this area won't be inhabitable.
I know little about other continents but we know it's coming.


About Moses, it's said that he never crossed the Red Sea, but swampy area near the coast, Jews would have find their way through together with guides which the Egyptians didn't have and they would drown in the muddy, swamp wetland.