ELE as far as humans are concerned - nothing new however. Happened before numerous times - some life would survive and things would start over, just as they always do.
“a grain of sand hitting a basketball”
A grain of sand traveling at 40,000 mph hitting a basketball at an oblique angle makes a real mess. There is a real time shot of this happening in a lab on some TV - Discovery, History, N Geo. one of them.
I understand it would be ugly. I just don’t buy into the ELE part.