LOL, you are still looking for 'proof' that kickboxers can't punch aren't you. Well, Bob Sapp isn't a kick boxer either. He was an American footballer then a wrestler. He lost more fights than he won in kickboxing and the first fight against Hoost was controversial, the majority of damage dealt by Sapp to end the fight appeared to be inflicted after the bell, both fights were doctor stoppages. Sapp was supposed to fight a friend of mine ( his pro record is 28 Wins, 10 Losses, 2 Draws, 2x world champion, European champion and 4x British champion plus MMA fights and 8x world champion x8 Ju-Jitsu) but chickened out a couple of days before the fight.
Don't keep coming up with things like this to 'prove' your point, it isn't working. there are poor kick boxers, there's poor boxers, it proves nothing about the styles.
Ernesto Hoost was a phenomenal kickboxer. Tough as nails (shaky chin though which makes it even more impressive). He got destroyed twice by Sapp by just punches.