The person who wrote this appears to be fantastically ignorant - they do not seem to know the difference between code that is on Github and code that is written

The person who wrote this appears to be fantastically ignorant - they do not seem to know the difference between code that is on Github and code that is written by Github employees. This is akin to believing that everything you receive on your Gmail account has been written by Google. I'm just about old enough to remember when the common image of a person involved in technology wasn't of some over-entitled brogrammer, and I lament that as much as anyone (fwiw, I think it's a false image and only very few people fit that stereotype, but it's a powerful image). But if you're going to go on the attack, getting basic facts wrong will undermine your argument.