That page seems like it's trying to define what Handmade is through a bunch of complaints and what it is not

Still no idea what they actually do, other than maybe this is just some random site about building a community to "make better software".

Software isn't bad because engineers don't care. It's bad because eventually people need to eat food, so they need to get paid, which means you have to build something people will pay for, this involves tradeoffs and deadlines, so we take shortcuts and software is imperfect.