Anything is debatable, surely? Otherwise it would be possible for that to be true. I wouldn't want to debate it, but I also wouldn't hold any flat earthers in contempt. I do hold in absolute contempt anyone who would ridicule flat earthers and not religion. Why hate on some fringe, lesser species of the same stupid genus? Even if they're often coincidentally the same people, as one should expect.
It's a little confusing so let me clarify the contempt parameters.
Only religion apologists and religion itself are to be held in contempt. In the case of the apologists, it's to the extent that they stubbornly hold on to their naivety. After all, Jesus teaches us to clothe ourselves with humility, kindness, patience, etc. You'll know when your patience has run out when you suddenly realize that you're living under sharia. Fucking hippies.