But it's Paul I tells ya!
And ... I tells ya ... it's John!
Sorry, couldn't resist.
As a matter of fact, I have been playing this part of the song to several people who are familiar with the Beatles' work. ALL say it is clearly Lennon. One woman made the observation that some people like to be perverse, for the sake of appearing clever.
I tend to agree with her there. I'm not implying you, or anyone else in particular, is in that boat. But some certainly are.
I wasn't going to post this, but then I saw you had re-asserted your opinion, so I though I'd re-assert mine.