Actually I think it’s precisely the same. In Papua New Guinea or at least with the particular people John Paul was with at that time, breasts weren’t (aren’t) sexual objects. They’re just…breasts. Things mothers use to feed babies with. Why should it be impossible to conceive of a society closer to home which takes a similarly enlightened attitude?
The point of the topless movement is to call attention to the unflattering and unwanted (which women can be just as guilty of encouraging, don’t get me wrong) sexualisation of their bodies - primarily by men. I can’t say I walk around my city topless (the Midlands of England isn’t warm or dry enough for a start!) but if I’m not remotely bothered by breasts - as a gay woman no less - I think other people can probably get over it. I certainly wouldn’t seek out opportunities but it wouldn’t bother me if I encountered one, never mind took part.
This moves into a broader point in that I don’t really see how someone can be offended by nonsexual nudity. Children aren’t remotely bothered by toplessness or nakedness. I’m sure we as adults can find it in us. Our view of things like this is entirely culturally conditioned. (I went to a nudist camp once: long story but…frankly…most people young and old alike would have benefited in sexiness terms from any kind of clothing at all. Even a hospital gown).
The sexualisation of particular body parts is entirely cultural. You can find plenty of imagery (representing to a degree the court practice) of say Queen Anne of England/Great Britain, or many of the consorts of the contemporaneous French kings, with happily exposed breasts. (Heaven forefend if one shows an ankle, though). I’ve been to saunas in Sweden (mixed, to boot). Breasts or anything else aren’t really very sexual at all. If anything it’s both rather egalitarian (if you take off your Christian Louboutins and Victoria’s Secret underwear, it turns out everyone is exactly the same underneath) and rather comical (I’m sure the genitalia arrangements of both men and women are some kind of huge practical joke).
The idea of this movement is to try and move society away from fetishising body parts. I really think people can be grown up enough to well…grow up. I could write a long spiel about this but I’m sure I’d bore plenty of people. Point is, how about we stop being so puritan about it? It’s only the modern west that makes such an obsession with sex. If you normalise something, its interest diminishes. We break away from sexualisation by making “sexual” things no longer sexy.
They’re just boobs.
Kendra once again the beacon of sense

Although I look at it the opposite way - if men can be uncovered, why can’t women ? (practicalities aside of course; the mere
idea of topless tennis sounds painful…)