Fake news.
“Generally, electric vehicle batteries last 10-20 years, but some factors may reduce their lifespan. For instance, batteries may degrade faster in hotter climates as heat does not pair well with EVs.”
https://www.jdpower.com/cars/shopping-guides/how-long-do-electric-car-batteries-last#:~:text=Generally%2C%20electric%20vehicle%20batteries%20last,not%20pair%20well%20with%20EVs.
Even my crappy 2015 2nd gen Ev is rated for 15 minimum and was one of the few at a time with a modular battery meaning you just replace the bad modules instead of the whole battery. Lowering up front costs and repair times unlike the leaf or spark which was all or nothing.
The rating is based off if a battery can’t charge past 70% capacity which designates it as failing meaning even if it is “failing.” It still has effectively 50% of its max range.