I see a lot of comments about "hey it's open-source, just fork". The reason people feel upset is because this project was shilled hard when it was released. The python packaging team was officially recommending it, stuff like that. There was some backlash because of legitimate usability concerns with the software, and what was perceived as the tacit blessing of a project solely due to the maintainer's having written…
Big, high exposure projects should probably wait to recommend interesting new projects for actual use until they are sure that the management of that project is in reliable hands with enough backup to continue it if the original creator vanishes.