I was reprimanded at the age of 10 for taking Thunderball into school as my book for the 'own choice' reading period... I can date it exactly because I still have the headmaster's remarks on my school report.
Years later I was amused to see several of Ian Fleming's James Bond novels,
Thunderball included, being issued in 'abridged and simplified' editions (with the abridgements credited to Gordon Walsh)
in an attempt to encourage teenaged boys to read.