Nope, Eliot's not salty at all. Not in the least.
Science Time: If you're not immediately familiar with Europa, it's one of Jupiter's moons...a satellite covered in ice and water. It's outside the "Goldilocks" zone but still has liquid water because of gravitational stress, so it's possible that there is life there. If you're interested, Neil deGrasse Tyson explains it better than I ever could:
See? With the actual potential for Europa to support life, there's basically zero chance that Eliot is being overdramatic here, right? RIGHT?! XD
Have a great weekend!