Maintainer of a Chrome Extension with 10,000+ installs here. Chrome doesnt willy nilly approve your extension. They even take down extensions that ask for permissions you do not legitimately use. The article doesnt say for how long op was able to put his extension on the chrome store without it being reviewed or taken down.
Just checked, my old dell i3 xps laptop running as a home server with no hardware changes and just its lid closed has the current uptime of 149 days without any reboot. This laptop wouldve sold for next to nothing, and already, it has served me approx $100 of cloud costs.