I agree with this and reflects my personal experience.
While potencial of a large audience is great, if you don't even have users to start with, the choice should be the response to "what gets PMF faster" and not "what do I need to take me from 500k ARR to +2M ARR".
That tweet doesn't reflect my experience at all actually, in Europe at least. I know it's an anecdote but I know many fit people that drink frequently Diet Coke or Coke Zero. Is this a US thing?
You might get replicas of incredibly popular works like Mona Lisa due to overfitting but that's it.
If I am wrong please do provide an example as this is very relevant and interesting (and impossible from an information theory pov).