There’s all sorts of people who are willfully blind for all sorts of reasons, I only know of three tactics that have been useful to me in the past.
Some people don’t have opinions as much as they hold beliefs that protect them from needing to have an opinion, the only thing you can do is, not debate them directly, but to get them involved in different social circles, make them spend time with people who don’t share their views, after a while, they.ll start to take on some of those views too.
Other people don’t change their mind until they have personal experience with the subject, in a sense, these people are honest, they’ll believe their own eyes but will avert them unless they have a choice. Just wait. Patiently.
And others, they only hold a belief until its uncomfortable to do so, when you ge the chance to talk to these people, you hold true to your beliefs and beat them over with talking points just as they will try to do the same, it’s a staring contest, a battle of wills to see who caves in first. its usually you since you actually believe what you say, because you care.
These people don’t care, which is why they don’t know the truth. changing is uncomfortable, more uncomfortable than being proved wrong again and again.
If you hold out longer than they do, if you dispassionately assert your beliefs, (never mind the evidence, they don’t care about evidence, you’re wasting your time), if you can manage to out talk them, you’ll score a point. Score enough points you may win them over to your cause.
The problem with debates like the one in the video is that they’re mainly entertainment, and they manage to entertain everybody on both sides, debates are meaningless when the thing in question is a fact. Just beat them at their game, talk the longest, talk the loudest, don’t back down when confronted with stupefying feats of mental gymnastics that serve as a crutch because of a lack of opinion.
/rant