It was true 20 years ago when China had to catch up in everything.
The thinking needs to be updated.
Heck, just look at the chemistry publications from top US and European universities. Chances are, there's one or more Chinese names in most of them.
I was only following the logic of the original question and your initial reply.
Original question: Why aren't labs outside of China publishing results?
Your answer: Because good rigorous science takes time to produce.
Logical interpretation of your answer: Chinese universities are producing bad, unrigorous science because they're publishing their findings so fast.
Instead of going on the offensive and taking such an uncharitable interpretation as a given, if you truly can find no charitable interpretation[1], maybe ask for a clarification rather than jumping to conclusions about unspoken implications.
You go out of your way to look for uncharitable ways of interpreting how others are interpreting your messages.
Implying that Chinese science is bad?
Chinese universities absolutely dominate in chemistry: https://www.nature.com/nature-index/institution-outputs/gene...
By my count, 18/20 top universities for chemistry research is in China. The first US university in chemistry is MIT at 23.
China's lead in chemistry research is also translating directly to real world applications. For example, CATL and BYD combined own more than 50% of the car battery market. Six of the top 10 car battery makers are Chinese companies. [0]
It's not surprising that most of the first replication attempts are from China.
[0] https://cnevpost.com/2023/01/04/global-ev-battery-market-sha...