Leaving aside the rather silly arguing, basic first aid as sheep-dip course in schools seems eminently sensible and worthwhile.
Just calmly discussing what to do when coming across (say) a car accident, or someone who's fainted before thinking on the hoof in the panic of the moment is itself very worthwhile, quite apart from some basic first aid.
OK time is limited in schools, but there's plenty to be cut. I dare say I wouldn't really miss out if I'd not been subjected to learning about Moses in Egypt, or the 1832 reform act (even if I found the latter interesting).
I do wonder though, notwithstanding the OP's post, if there's too much emphasis on CPR as opposed to other serious things such severe bleeding / trauma or broken bones, or even choking. I'd have thought, but may be wrong, that mostly CPR doesn't end as well as the OP's example. Just to be clear CPR is obviously worth knowing, but arguably a long-shot, but stopping someone bleeding to death following trauma would be something to emphasise rather more I'd have thought. Should be both, rather than either / or mind.