As the article noted, GM managed to sell around 7400 of them in 3 years. And as Consumer Reports estimates, the batteries should last 17 years at 12000 miles per year. So there's no economic incentive for either GM or third parties to make battery packs for that tiny number of cars when normal driving would have a battery life extending to 2032 or thereabouts.
I'm reminded of my first home computer, the IMSAI 8080 which was made for 3 years and according to the internet sold 17000-20000 units. Did anyone make spare parts? Heck no.
Early limited adoption tech is like that. It's why I'm not a bleeding edge adopter any longer - the old joke about pioneers in any field having arrows in the back come to mind.
So my take-away is more emphasis on a smart consumer considering the economic incentives involved. And in the case of cars, it's the incentive for spare parts production including batteries in the case of EVs.