I really don't understand your argument. Git is for decentralized development but there has always been a need for a central server to host the repo and github

I really don't understand your argument. Git is for decentralized development but there has always been a need for a central server to host the repo and github made a business out of providing that along with additional services (pages, wiki, issues). The dear-github complaints are overwhelmingly about the secondary services github provides for project management. >Why did people set up systems that depended on the ability to download from GitHub, for instance? Because if they didn't rely on github they'd have to rely on some other server subject to similar downtime?