Gotta be foolish for anyone to continue believing their delay excuses. Batteries are no biggie because Smach Z uses off-the-shelf batteries which can be user replaceable. Then earlier there was button paint job or the dented plastics excuses, both of which doesn't hinder the device's normal operation but yet refuse to ship them.
Smoke and mirrors job. Hire companies to build rough prototypes for parade in crowdfunding and get preorder money. Was never able to finalize and mass manufacture anything. Hence those strange delays upon delays, not to mention false delivery estimates which eventually cannot estimate anymore..
But with years of no results and delays (plus successful competitors already shipping) pretty sure eventually the investors knew something was wrong (likely cover-ups) and finally abandon the project.