I had a nightmare a couple of years back that I was in a super cell with a large tornado at the center with multiple smaller tentacle tornadoes orbiting it. The videos of this storm actually reminded me of that dream.
EF4s and EF5s account for <1% of all tornados and >67% of all tornado deaths.
I think modern warnings may have made this percentage even higher. Less people are dying in the small tornados but there is still little that can be done to save yourself in 1/2 mile wide EF5.