I don’t see how directly electing him vs. having a state legislature elect him would change the basic fact that the U.S. Senator position is defined by the U.S. Constitution and that document controls his term of service and means of expulsion. If the U.S. Constitution states that the term for a Senator SHALL be six years, how can any state body decide that it shall be anything less?
I’m saying that the 17th Amendment is at fault...since we already vote to elect them now we naturally have this idea that we can just “recall a Senator” by direct popular vote as well.
This is little “d” democracy at work. Direct popular votes are more popular than ever! /s.