He's right though.
Kim has said he's fighting like this to get more fans and hype for a title shot/bigger fights and that has worked out pretty good for him. I assume he would be much less reckless against a tougher opponent which he'll probably get soon.
The old limp Dong is more likely to win against a top fighter than he would if he uses his past two gameplans. If he tries that against quite a few guys in the UFC WW division it would end badly.
"In ten years nobody will remember the details of caliber, stance, or tactics. They will only remember who lived. "