Uh yeah. You could discuss current limits and wire resistance to no end, just because, but it appears completely pointless here IMHO.
What's wrong with what this guy is conveying here is that 1/ it's just not how you should teach beginners, if that was at all the intended purpose - sane basics are better than ugly hacks especially since it would have not taken more than a few seconds to explain it and add a fricking resistor on a breadboard, and 2/ with this kind of "I dare you to convince me otherwise" attitude, it just sounds like someone full of themselves, laking minimum humility on a topic they don't fully grasp, and it also sounds like the typical "software guy" (the stereotype) whose mantra is "but it works on my own machine".
So for those 2 reasons, even if that was a detail in the video, it's just bullshit conveying the wrong ideas. And as someone else mentioned, it's not about the guy who I don't know, it's all about what he *says*.
Now for the last thought, as he is apparently a seasoned Youtuber with fancy equipment, let's not ignore the fact that he possibly said that *exactly* knowing that it would trigger a lot of reactions, just to get the buzz and maximum number of views. I would seriously consider this here. That may all have been right on purpose just to generate more traffic. And it appears to work. Yes, Youtube is a sad game but it's just a business.