There is such a thing in the world as a measured and appropriate response.
Given that most of the gals I know find a whistle (or other light hearted compliment) to be generally amusing, and on the days they don't, they have a rather scathing (but funny) response, I don't see the problem.
It's not revenge porn being published (that stuff deserves to have people committed to a monastery where they'll not get any until they sort their heads out), but it has all the hallmarks of minority vigilante justice. You know, where the small subset of people decide to impose their own world view on a majority that has a different way of thinking. In this case, the end result of the imposition is a lessening of interaction, and a further isolation of people (most of the 'banter' interaction assumes that people are generally amiable sorts, and initiating the interaction leaves the initiator in a slightly vulnerable position; scathing comebacks often happen, and can leave the initiator red as a beetroot.. But that's accepted as a possible outcome).
Assuming people are generally friendly and amiable is a good thing. Far better than assuming people are hostile by default (which has increasingly been the case over the last 20 years or so), which can very easily lead to increasing social isolation (which is becoming rather a huge problem).
Things like this.. Well, it's broadcasting to a large audience (who have no idea of what was actually going on) a personal (and probably entirely skewed) view of a situation, conceivably causing problems for some of those 'shamed'. There is no determination of what the situation really is. No appropriate response, just an assumption that the writer is right, everything else is wrong, and that it's ok to play the victim card to get potentially heavy retaliation against whoever you choose.
There's a word for this, and it's called "Bullying". It's a far more clever and manipulative version of bullying than the stereotypical thug in the playground, but it's still definitely bullying.
Years ago, when I worked in a variety of bars, I did a little experiment and put a mirror to this kind of behaviour'. The banter of the women, and the light hearted swats and things were met with extremely terse and accusing responses. Without exception, it was met with bafflement, derision or in some cases upset that offense was caused (even though it wasn't in reality; it was a debate style stance). Women just didn't understand why it was 'wrong' to make contact when they chose, or to have a little verbal banter. They were correct, but most of them, if you turned it around, believed it would be inappropriate to subject a woman to that. The only reason that was brought up for why it'd be inappropriate for it to happen to a woman was "well, they're women". Most, however saw the point.
One memory that really still makes me chuckle was back in my cycling days when a car load of gals drove up a hill I was cycling up, and whistled and cheered at me.. Then they drove down the hill and back up with the explanation that they just had to get another look at my legs and arse... That made me laugh, feel a lot better about myself, and actually made an otherwise crappy day a lot better.
So, thank you to gals that know that it's ok to be friendly and have banter out of the blue. Thank you to people who reach out and have a laugh, and assume you're a friend they've never met. Long may that continue.