Having had a few rockets partly RUD-ed (and ruined, by split BT-5 seams) by the overly-powerful mini motor ejection charges (even a Quest Starhawk--designed for 18 mm A6-4 motors, which I flew with a 13 mm motor adapter mount--had its interior quickly well-"toasted"), I wouldn't say it was "exaggeration." Even 13 mm boost-glider competition flyers reported split-open BT-5 motor pod body tubes back then.

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Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see:
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NAR #54895 SR