School photo and head teacher

[Schoolphoto]

possibly outing situation but wanted opinions please.
it was my sons (year 4, age 8) school photo day yesterday, message from the school a couple of days ago with a reminder saying please arrive at school on time and in the correct school uniform.
sent ds to school as normal, black shoes and trousers and school polo T-shirt. When he came home he has said that the photo is awful as the head teacher made anyone not wearing a jumper or one without the school logo to borrow one from the school so he was forced to wear one which was tight and too small for the picture. He has said all but one boy, who they couldn’t get a jumper to fit was made to wear them by the head teacher.
I haven’t done or said anything yet and will probably wait to see a mock up of the image to see if this is all true but it feels wrong to me. i am not that parent who moans, never spoken to the head teacher and only spoken to his teacher at parents evening but does anyone else feel like it’s not right? Surely if they wanted jumpers worn they should have sent a message saying so, but my son doesn’t even own a jumper, never has since the first year as doesn’t wear them and it’s never been an issue for the previous school photos although this is a new head teacher this year.
would I be unreasonable to raise this or is it just petty and I should forget about it?

When its school photo time, as a teacher I always make sure the children look as clean and tidy as possible. Some turn up with toothpaste down their front, food round their mouths, shirts buttoned up odd, hair all over the place.
We put jumpers or cardigans on for whole class photos but not individual ones. I’d assume that parents want a nice photo of their child?

The whole class/school photos are different to the individual ones and look better if everyone is in the same uniform or none at all as in my daughter's photos in the 90s. As far as individual/family photos are concerned it doesn't matter whether they wear devil hats or the party frocks and national costumes I have seen brought in specially.