Hi Tony,
Or...
PJ might have told the flat earthers that the world was not flat but round & asked them what made them think that the world is flat.
He may have pointed out to them that the Earth casts a curved shadow on the Moon & that certain stars can be seen from here but not from there.
He may have asked, how can that be if the Earth is flat? When they could not provide any real answers, perhaps they would have just called him a 'Flat Earth Hater'.
He may have asked questions & received no real answers & continually have been called 'Hater' until the Earth was finally circumvented to prove him correct & the flat earthers incorrect in their belief.
Just food for thought.
Best 2 You & All,
Rick