It wasn't the owner that suggested it. It was some random blogplost that insisted the normal town well that everyone used was no good and you have to use his super special well instead. He points to an incident 6 months ago where someone got drunk and decided to jump into the well. The dude who jumped into the well didn't even say it was the well's fault.
I did read the article linked. I am remain unconvinced. Use effect for data fetching is not "risky", "fragile", and does not cause "subtle, hard to debug problems". This is baseless fear mongering. Claiming Tanstack is the "right" way is incredibly arrogant.