What happened to the flat earthers who demonstrated that the earth is round in the netfilx documentary ?

A few year back, there was a Netflix documentary about flat earther. They've done a couple of experiment to prove that the earth is flat which (Spoiler alert) demonstrated that the earth is round.

So now that these persons have demonstrated scientifically that the earth is round. How are they doing ? Still flat-earther ? or did they give up with the amount of evidence they collected ?