As time goes on fewer people will have had experience of cp at school and interest in it for that reason will diminish. But for the moment I think most men and a significant percentage of females over 40 will have at least attended a school where it was practised to some extent even if they didn’t receive it themselves. So Ms L. Nonsense’s claims match her name.
The fact that tens of millions of living UK citizens attended schools where CP was practised does not in any way support a suggestion that the relatively small number of writers of allegedly true School CP Stories are telling the truth.