Exactly. The disjointed lets-see-what-happens feel was the whole point of the film. The Merry pranksters gained fame for driving a pyschedelic bus around america in 64 staging random happenings. Macca was clearly inspired by this and wanted to capture that hippy amatuerishness. To criticise it for this is like criticising Star wars for having spaceships.
I'm not a big fan of "hippy" cinema at the best of times, so MMT doesn't really work for me. But it was a brave attempt at something different.
"Hippy amatuerishness" is one thing, bad filmmaking is something else. McCartney may have been inspired by the Pranksters, but the
approach was totally different. The Pranksters film's made no pretense at having a script or story; they filmed whatever happened and that was the story.
With MMT, the Fabs tried to bring that improv spirit into an actual story, which was a big mistake. They either should have completely made it [the movie] up, or had a stronger. more developed story and stuck to that.
If you're going to improvise, you can't be too worried about going from point A to point B; you just
go and point B is wherever you end up. Maybe if there had been less stops (the wizards, the beach sequence, etc.) and more travleing MMT wouldn't have been slammed so badly.
I'm not trying be too argumentative here, after all its only my opinion!