The piano riff is agonizingly juvenile.
“Being for the Benefit of Mr. Kite” and “Good Morning” suck, by the way.
My grandfather, upon arriving home after work and being informed of Lennon’s death by my grandmother:
“Hmm...One down, three to go”.
Those two songs are not normal 4/4 beat rock and roll but they DO demonstrate the incredible musical songwriting abilities Lennon/McCartney had.
Together they had a synergy that exceeded either of their abilities on their own.