You also called Dean Odle a liar just because they both believe in F/E.
I don't believe it's just because they believe in Flat Earth - no one would call someone else a
liar because they had a certain belief.
I seem to remember there was some incident involving Dean Odel and a playing field. I think he said that it was level and it wasn't and he was later proved to be wrong. If he was wrong, he knew he was wrong and didn't correct his statement; he lied.
In the above video, it seems that Rob is looking through a certain part of a lens. Then he issued a kit where he had you looking through a different part of the lens. If he knew that he had made a mistake but didn't own up to it, OR if he deliberately instructed people to look through a different part of the lens, he lied.
These two things can be proved, or disproved. A field is either flat or it isn't, and the instructions in a kit either say to look through the top, or bottom, part of a lens. They have nothing to do with belief - those men are/were either right or wrong.
The statement has been made that they were both wrong - again, it's easy to prove. If that was the case, and the men cared about the truth, the best thing they could have done was to say they made a mistake, offer an apology and re-think what they were trying to demonstrate.
If they were told, and shown, that they were wrong and they refused to issue an apology or correction, they are/were deliberately misleading people.