These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fridge Logic: How does owning a ring that can't be removed from one's finger help one gain global domination? Perhaps one could argue the value of replicating the metal, but it appears that there's no way to cut it and take samples...
It does seem to be acknowledged: "With a ring like that, could I interest the military? No, I could not."
"Funny Aneurysm" Moment - This is the film that got George Harrison, and the rest of the Beatles through him, interested in Eastern religion.
Seeing John being threatened with a gun would probably be a much bigger FAM.
Especially since Foot actually fires it right at him, of all people, though it jams.
There is also the scene where a bunch of vaguely Middle Eastern/South Asian cultists are rounded up and put into a prison camp and a Caribbean island.
Due to their morbid and surreal humor, most of the Beatles movies are full to bursting with FAMs to varying degrees.
George saying "I've never seen any drummers with one, you know..." doesn't seem as silly in light of what happened to Rick Allen.
Juxtapose the Beatles' concern not to step on shrunken Paul as "it's his best suit", or George cracking on Paul's goofy "Indian scout" delivery when he discovers fake footprints on the road in the Bahamas, by saying, "Don't encourage him. You've got the part, Paul", with the band's later Creative Differences with Paul five years later in Real Life.
To say nothing of the earlier scene where George lunges for the throat of one of the bad guys and gets John, instead.
John (choking): It's me, you fool!
George (teeth gritted, still strangling him): Oh! Sorry!
Hilarious in Hindsight - Ringo, George, and John's disguises in the airport make them look much like they would later in life.
Everything about the Beatles being on the run from (essentially) Indians and making (joking) comments about their 'filthy Eastern ways', considering they would later embrace that culture. In particular, a scene where the cultists quickly replace a band in a restaurant and start playing an Indianised instrumental version of A Hard Day's Night.
George Harrison first got interested in the sitar seeing it used in that scene.
Contrast the band members' stories that they were stoned on marijuana when they filmed the movie, with this bit of dialogue, as Ahme is attempting to inject Ringo's finger with a formula designed to shrink his finger so that the ring will fall off:
Paul: But is it mainlining, or habit-forming?
George: (sticking gum in his mouth) Not as long as you don't swallow it.
The movie's especially funny in light of the fact that The Beatles later tried to get the rights to make their own film version of The Lord of the Rings (no, really). They probably figured they had experience acting in a film about a ring that all the bad guys are trying to take...