We all have access to Grok and other AI models, and we will ask it if we want it's bullshit hallucinations. There is no point polluting HN with this trash.
Is it wrong?
That's a good question.
In order to know whether or not the AI was wrong, you'd need to do some research. Otherwise it's about as reliable as any "fact" some random person on the internet claims to be true.
These numbers are probably only for the local corner of the galaxy. It depends on when the supernova(s) that created the uranium exploded.