The State of Execution in Fighting Games

Execution is a common topic in games overall, but especially anything that we deem to be competitive.

Be it MOBAs, FPS games, RTS, and of course, fighting games. It usually carries an association with difficulty of said games, where higher execution required equates to higher skill ceiling.

However, how much does it actually matter for fighting games, and is streamlining or simplifying games, truly the way to go?