1. I'll take "ad hominem fallacy" for $500, Alex. Along with "poisoning the well" and "genetic" fallacies.
Your argument is classic "ad hominem" and "poisoning the well", plus some "genetic" fallacy thrown in. Doesn't matter if his arguments and evidence are complete slam-dunks making a water-tight case for Flat Earth. He practices Yoga, so all his arguments are invalid. Sorry, that's not how logic and rational argumentation works. Go back to logic class (if you ever went).
2. There aren't many individuals who have read the older books, gathered evidence, asked important questions, connected some dots, made insightful observations, and gathered evidence. There are only so many to choose from.
3. Yes, I proudly present some of Eric Dubays work, including his videos. He has done good work on the topic of the earth's shape. There is no problem with that. Now if I brought him forth in a discussion on religion, or the Faith, then you would have a point in criticizing me.
4. Are you 10? You seem to have a simplistic "good guy" and "bad guy" mindset, when it comes to who we pay attention to, or who we can learn from. If you restrict yourself to Trad Catholics, then you wouldn't know anything. Just whatever your parents could teach you, assuming you were homeschooled. But even then -- where did they learn from? I bet they got most of their knowledge from non-Trads. How many books are authored by Trads? How many classes, K-12, and university level, are taught by Trads? I'll give you a hint: not many. And if any of those few Trad teachers use books or manuals written by non-Trads, you have to throw them out, so...
5. I don't need to go further than to point out the logical fallacy of the ad hominem. But to demonstrate WHY that is a problem, for the slower kids in the audience: Are we really going to play that game? How about I show some of your "rock stars" pushing NASA's BS and show them wearing their Freemasonic aprons and such? I could come up with some real doozies of quotes as well. Virtually ALL of the famous spinning ball/Big Bang universe proponents are rabid atheists, who have no kind words for the God of the Bible.
No, if we are to judge the truth of "Flat earth" vs "Globe earth" by the moral rectitude of each side's most famous proponents, then I must conclude that the earth is most certainly flat!