Firstly, it is not normal in the open source world. Hell, it's not even normal open source projects owned large companies that are the foundation for a major product - like Android. Secondly, as the story points out, it is a fork of an open source app that is already on github. It's not like the infrastructure for it isn't already set up - they just had to do a git clone, and then use standard CI techniques
Maybe the OP isn't familiar with the modern software engineering techniques we now use to improve quality.
Maybe the OP isn't familiar with the modern software engineering techniques we now use to improve quality.