I just checked with the datasheet of a current commercial spin welder.[0] The rpm's given on the datasheet are 500 to 2500. I think the author might have slightly exaggerated the capabilities of their 1970s toy for effect.
You are missing the central point of the Walkie-Talkie and Disney-Concert-Hall controversies. These are Frank-Gehry(-style) buildings, and in those roughly half of all surfaces is a concave and half is a convex mirror. THIS concentration to one point is what turns the summer sun into death rays.
Reflected sun, by definition, has a little less energy than direct sun. So, given the mirror walls are straight, as the designs show, you get (at maximum) 200% of normal desert sun energy, which isn't comfortable, but not a Gehry-style death ray.
You are right. And I do understand why he does it. I can see his side.
But I sit on the other side. I hate it and will tell everyone how much I hate it.
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Edit:
Or, if you prefer, in market terms: Because I am not alone, there is a market for non-clickbaity titles, non-exaggerated thumbs, and there are channels that cater to this market.
I want to very much second excluding Veritasium. Whenever he talked about something I was knowledgeable in, he made mistakes. This combined with branding himself as 'the element of truth' and the increasing over-clickbaity titles and thumbs made me stop watching him.
It's an entertainment channel, and if you want light science entertainment, and expect to forget everything within a few hours, it's a good channel.
If you want a science/learning/education channel, it isn't.
There is another consideration that people on YouTube ignore, but Apple doesn't.
You don't want the underside of the computer to reach substantially over 40deg for a considerable amount of time. This is because some people put their laptop on their lap and if it is too hot, it starts slowly cooking the leg. This has happened before, and thus nowadays, all new computers make sure the underside doesn't exceed 40deg for longer periods.
So I wouldn't be surprised if the people on YouTube traded performance for on-lap-safety. Apple can't, for obvious reasons.