It's all part of the bigger issue/thin end of the wedge thing I think.
At present, some venues have decided that children under 8 (usually) can accompany their parent into opposite sex changing rooms as a courtesy/selling point to the parents - it's not a law or anything I don't think? That is not the child's fault.
Parents are also used to having kids round and (usually) regard a bit of naked flesh as nothing to worry about as they live it every day and they also want to take their kid swimming etc. That is not their fault either.
And they have concerns about the ability of their child to sort themselves out in the correct sex changing room. Also not their fault.
But then there are all the other women who are using the same facility who do not want males in female changing rooms and are not used to it - definitely not adult males, almost certainly not older male children and actually, younger boys are not great either, given their natural nosiness and tendency to stare and make random comments (we all know a kid who's blurted something awkward out!). Guess what - also not anyone at fault here.
All the above are fair enough and reasonable positions.
But it comes down to one group's rights seemingly automatically trumping another, with no recourse or alternative available.
The group of women who use the facility as women, not parents, are finding their rights are "automatically" lesser and that they should be the ones to just get over it, or scuttle off into cubicles, or contort themselves under towels, or simply not use the facility at all. Why not send the mums into the cubicles and leave the open plan bit to the larger group of women? Why does the minority group take over the majority? Why are the women fighting women instead of elevating the issue to where it should be better family facilities where nobody is inconvenienced or made to feel unwelcome? Or in fact looking to make the male changing room safer (in reality or perception)