I agree that the level in artistic gymnastics currently is very bad:
On the women's side:
Russia used to have 2 great all-around athletes and now ... ?
What about Romania and China?
What about Ferrari, Steingruber and so on?
What about the british girls?
USA used to have 2 great all-around athletes and now? Hurd is a great talent, but until a couple of years ago her level would have never been good enough to be top 2 in the US in all-around.
The only "positive" trends are the improvements of the japanese/canadian girls and of Derwael.
On the men's side it's a bit better, but still not great:
The US has gotten clearly worse in my opinion. Japan has also gotten worse in my opinion. What happened to Larduet, Uchimura, Leyva and Verniaev?
I expected Whitlock to be much better in all-around by now. Does GB have any serious contender for an all-around medal in 2020?
The only nations that have improved or at least kept their level in the last couple of years are China and Russia.
The number of medals going to "exotic" nations is very surprising, normally most of the finals were made up by athletes from Japan/Russia/China/USA/GB, but now we have tons of finallists from small nations. Some might say that this is a sign of a higher level of competition, but in my opinion it isn't. I think we might see a similar development in other sports (figure skating, swimming) as well, every year it gets harder for western nations to "find" kids who are willing to train for hours every day.