I've said this many times, but it bears repeating. There isn't anything wrong with doing kata. I don't even have a problem finding new application in bunkai.
Drop Bear hit the nail when he observed that kata (and drills such as in the OP) presume success. In sport, most similar drills build on failure. In other words, in the OP, the first punch lands and knocks the guy off balance, then up into the jaw, parry the second punch, and voila. In an art such as bjj or mma, the drill would have started with you punching and other guy defends, so you chain together tecjniques. If it works, great. If it doesn't, move on. This is why people often compare BJJ to chess.
The other concern is that any of these drills, without application by the individual, will be unreliable. A
Person can intellectually understand anything. Drills and kata are training. They can be useful, but are only step 1 on a path to proficiency.