Another of the countless  inacurrate things Scaruffi says about The Beatles writing 3 minute songs,well until The Beatles broke the rules for everyone with the long song Hey Jude in 1968, the radio’s rules for everyone was that they wouldn’t play any songs longer than 3  minutes. If you look up online The Rolling Stones early hit songs like Paint It Black etc they too are only 3 minutes and some seconds.Pain It Black is  only 3  minutes and  22 seconds long. 
As Tears  Go By is only  2 minutes and 33 seconds.
Under My Thumb is only  3 minutes and 41 seconds long.
Get Off Of My Cloud is only 2 minutes and 55 seconds long
Satisfaction is only  3  minutes and 44 seconds.
Ruby Tuesday is  only  3 minutes and 15 seconds.
The Who’s My Generation is only  3 minutes and 18 seconds.
Happy Jack by The Who  is  only  2 minutes and 14 seconds 
etc, etc