Rolf Harris Picture Builder is there in the listing along with Starter Chess, but they’re on Side 2 of the Xzap/Punchy cassette which came with the Commodore 16 Starter Pack bundle which is why you didn’t spot it. I would have preferred an extra game like Fire Ant from the Plus/4 Pack or a another completely original game rather than a weak drawing utility myself. It’s a shame what happened happened with Rolf as unlike Savile, Rolf didn’t creep me out and I quite liked the guy. Still hard to get my head around fully, tbh
I stand corrected, I reread your post and You say the instruction booklet was missing, not the software, apologies for that! I have to say the Harris thing shocked me far more than the Saville saga.
Ultimately though I could not put any software using his endorsement anywhere near my C16 which is fine as I don’t have that tape anyway. Obviously back when that program was included in the C16 pack nothing about his crimes were known.
Without knowing what the aforementioned program is like I would wager a guess that you are spot on with regard to it being preferable for Commodore to have included another game or two instead.