Yes, it is worse. Getting a knee up to a standing opponent is completely different than trying to get a knee off on somebody on the floor, and the floored fighter can't protect themselves the same way. It's even worse in this situation because knowing it was illegal, Aljo wasn't at all braced for it. You clearly have absolutely no idea what you're talking about.
HOW is it different> You haven't given me any evidence other than your own assertions.
How is getting kneed while kneeling down worse than, for example, getting kneed while your opponent has full Thai plum on you and brings you INTO the knee (eg. Silva vs Franklin); or moving into the knee from a takedown while the opponent does a flying knee into you (Cuban missile vs. Weidman)??????
It's basic physics; you will have MORE force generated in a collision of objects moving into each other. Notice how at least Aljo has somewhere to go (backwards), which somewhat dissipates the impact of the force to his head.
Also, in all the above scenarios (really in ANY scenario where you get hit clean in MMA), the fighter doesn't have the ability to defend himself: THAT'S THE POINT OF THE FIGHT. You're like saying its unfair to Adensenya for getting GNP'ed by Jan because he couldn't defend himself in that position. You're basically saying we should give fighters an artificial means to defend themselves.
Also:, please don't say I don't know what Im talking about, if you don't provide any logical arguments, explanations, or real-life examples for your own assertions. Until you do, you're just saying "Im right because ..."
By the way: you haven't said anything about following, so I assume concede the point:
1. there's a qualitative difference between bringing in a gun or having groin kicks, vs. allowing downed knees.
2. if it's any easy position to move from, making knees legal from this position wouldn't be a problem.
3. Aljo was stalling, and (according to you) should have been penalized; there is no other advantage to that position;
4. The rules as they are artificially giving the fighter who has gotten into weaker position an undeserved reprieve.