I have some good news for you: https://www.geotab.com/blog/ev-battery-health/

I have one of those Bolts.

Not only was the battery replaced, the 8 year warranty on it was reset. Also, the idea that EV batteries die after a couple of years like in phones was unfounded. The batteries in EVs are actually properly temperature regulated unlike the ones in mobile phones. The primary degradation in an EV battery happens when the battery is new and stays basically flat for the rest of its life.

EVs have been on the road long enough for studies to determine that most batteries will last at least as long as most people will own the car.

I was paying $385 per month in gas for an Astra hatchback, which is not exactly a gas guzzler, though I did live in the mountains at the time.

I replaced it with a Bolt EV and the hit to my electric bill was about $50 with the same commute.