I agree, but I think it's more than that; in the old days Momota had the physicality and anticipation to play a better neutral game.
It lead to his opponents eventually taking shots that they tactically shouldn't have been taking; then he would win control of the rally from that point on. If they did get a good smash/drop/drive off, he was able to mostly absorb the attack and neutralise it again and again. His opponents did win points occasionally but it didn't matter in the whole scheme of things, he was in control of the overall game. If anyone's played MTG, it's like going up against Teferi control decks that just mill you and prevent you from playing your win condition until you suffocate and lose control completely.
These days it appears that if you have a big smash and you run to the net immediately with your racket up after you've smashed well, you have so much initiative that you'll almost certainly score against Momota. Perhaps it's telling that so many top mens singles players including Axelsen, LZJ, Li Shi Feng, Shi Yuqi, CTC, AA are all 1.80m or taller with an emphasis on power and reach. Lakshya Sen is himself 1.79m if I recall correctly; only LKY and Ginting are outliers in this respect (LKY being 1.75m tall and Ginting being 1.70m). The meta of the game seems to be steadily moving towards taller players because they are consistently stronger; control and court craft can be trained but height (maximum physical potential) cannot and the classic slower turn rate of larger players seems to be able to be overcome with simple power. Also I think just having less steps in your footwork (ala Chen Long vs Ginting) means less chances for deviations to occur and thus less mistakes overall, so even there taller and bigger players win.
This is all my observation, but I'd like to see Ginting overcome these giants with his guile and quick recovery.