Right, you had mentioned you wrote hubski in Arc and so I was interested to see what you thought about this.
No judgement about your choice of language, this is your project and you should do what feels right to you. And if you like it, more power to you.
About PG though, he is more a guru brand than an engineer, and has been for a long time. For Arc, he set his own goal posts as a "hundred year language", and then failed to meet them by a country mile. He also ignored his own advice about learning from feedback. His M.O. will continue to be: oversimplify a problem and make bold proclamations about it with authority, without regard for accuracy. His proclamations about wealth and economics follow the same vein. Arc is an cautionary tale about success, ego, luck, and bullshit in Silicon Valley.
As for the essay author I think he would admit his own failures in his own field, most working engineers will.