You think wrong. The photo itself is the major problem.
Either this organisation has a set of uniform rules that we are all expected to follow, or it doesn’t and people are free to mix and match as they choose. Not any different from other sets of rules, really.
Our dress rules are dictated to us by the RAF - they seem to expect a certain standard to be adhered to, with what flexibility exists being defined in those rules. Certain people are engaged to monitor those standards, such as others monitor unit H&S, shooting compliance, AT compliance and so on. division of labour.
With that in mind, we are all expected to adhere as closely as we can to those rules, and this becomes especially important when we present ourselves in public (directly or through publicity)
As a member of the badge police, I don’t personally care what way our rules go but I will police based on those rules because that is what is asked of me and it is what is expected of everybody. Relax those rules and I will relax my stance. Relax them too much and you bring into question the link between us and the military - we may as well go our own way from that point.
The situation in the photo should never occur - whoever decided that a No2 jumper was appropriate cold-weather wear in No3 dress is misguided and should have thought harder about it. I do accept that it is cold at a gliding site and when push comes to shove we will do what we need to for people to be safe and warm. It was a failure in planning and, in part, a failure in supply.
The crime here is publishing the photo, knowing that it was publishing an infraction of the dress regs. The solution is trivial: don’t take that photo. Maybe make sure everybody is correctly dressed (3 of the cadets had removed jerseys), or stage a new photo later.
The fix is also easy - take down the photo and either publish without an image or wait and take a new image that is suitable for publication. It does not require a shouty phone call (from either end of the phone), anybody wearing hats and being denied tea, or dummies being spat out and people flouncing off into the sunset.
I don’t care how much we as individuals agree with the media and dress rules, they are the rules we are bound by and until those rules are formally relaxed (not simply ignored by slackers) then we are committed to them. It doesn’t matter how high up our chain we go with this, until we wrest full control of our own dress regs from the RAF it is simply not our call!
Also, the wing media officer should have been all over it like a rash!