An interesting story, thanks for posting it!
Since Superboy probably had to dismantle his robots and re-build them as he was growing up (if only to show growth), I still wonder why he couldn't just take them apart and explain why, he could even say some of their components would live on as Superman robots...at the very least he could have used the spare parts rather than obliterating them...
But then, that's not so exciting a story, huh? :wink: