I don't mean to sound like a condescending prick, but have you ever considered that you're not good enough of a Cage player? If anyone has a reason to preach about this matchup, it's Dizzy, the guy has lost four-figure sums on the matchup in tournament and not even he would say it's systematically unwinnable.
At the end of the day, this is the difference between a heavy disadvantage matchup (starting at 7:14), and an unwinnable one (I'd like to point out that I'm not posting this because Dizzy eventually won, but to demonstrate it's still possible to make reads against said disadvantages):
This is an unwinnable matchup where you have zero options whatsoever that remedy the fundamental problem:
Comprende? I'm done here.
Not 100% true. Shang and Noob have neither those of things, at least not with notoriety and do well. Forcing yourself to get in against Kenshi is an ill-fated premise (unless you literally have no choice like Cage) and probably explains why a lot of pocket KLs still couldn't get the job done.
Also, I bet a lot of those dominant matchups you're thinking of were the ones masqueraded by low-ranking matchup police officers like Death lol.