TL;DW: Specification says that the holes are optional, but they are often used to facilitate the manufacture of the plug blades. It defines a position and size for the holes so that they will be out of the way of the actual part of the plug that makes contact
Alec (the person who runs this channel) has a habit of rambling on about all sorts of semi-related historical facts and other such nonsense.
I understand if that is not to your taste. I quite like it.
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-- That's just a dumb pun. The gent who invited me to join this community said to post anything here and I said "I'll bite". This counts as "anything". And is also biting.
It is.
Anyone with the disposable income and stupidity enough to spend on this kind of ostentations garbo is sorta asking for it, yanno? Because it takes guile to climb your way up the capitalist hell-pyramid, so you just know whoever is buying zipties for 600 dollars isn't just an exploitative bougie -- They're a stupid-ass expoitative bougie that inherited their wealth and very likely never had to even work in their lives.