Should Flat-Earthers be debated or ignored?

[John 6IX Breezy]

...For me personally, concluding the earth is round requires making measurements and observations that I'm not in a position to make. So I welcome being questioned about something I accepted on the authority of others.

What do you make of this?

An image of the earth that I neither took nor saw taken, but accept on authority. Illustrated by the fact that most of us assume such images are taken with a single shot, when they're actually composite images stitched together.