FUD about battery life and having to spend over $10k to replace one was a large factor in EV depreciation. Some people assumed car battery life was like that of a cell phone or a laptop, perhaps 3 years. There is increasing evidence that EV batteries with good battery management systems will last 15+ years (see https://www.geotab.com/blog/ev-battery-health/). Once the general population understands an EV will outlast a gas car and needs less maintenance, resale value should improve.

Up to very recently only Tesla had good battery management. Other manufacturers joked around with things like no active battery thermal management, Nissan Leaf finally got one this year lol.