Unfortunately I do think this is another area that has been squeezed to the bones because of money , and the first ones to suffer are the teenage boys who listen to no one.
but unfortunately schools do the absolute bare minimum regarding swim lessons (not because it isn’t important, but because they don’t have any money at all - TA S are covering cleaning after school where I am as we no longer have a caretaker- and a massive amount of parents won’t make a contribution (interestingly it’s never the parents you would expect) so they can only do the minimum and kids are not learning to swim)
in addition the current teenagers where about 9/10? During peek covid , swimming lessons where cancelled for a long long time , and I have a feeling a few never went back.
also I don’t think the emphasis is put on the importance of swimming lessons any more (generally) and its viewed as a nice extra curricular activity, that sadly a lot of families can’t afford or choose other things instead.
sadly as with the vast vast majority of things , it all links back to money