Sure, but the amount of 70F water that lasted for more than a decade might have been 1000x higher because of increased geysers, volcanoes, deep sea vents etc.

Sure, but the amount of 70F water that lasted for more than a decade might have been 1000x higher because of increased geysers, volcanoes, deep sea vents etc. Sure it might have been a vanishingly small fraction of the earth's surface and oceans, but still have an impact on the evolution of life while the earth was on average quite cool.