I think the point the post you're replying to was making is that the gas tank itself doesn't usually go bad. It's true you can't just let gas sit in a tank forever, but with EVs it's also true that you can't usually just leave a battery to sit unused for years; eventually, it'll self-discharge below a threshold where it becomes permanently damaged.

I do agree that battery "problems" are exaggerated -- most will last a very long time, and batteries that don't use cobalt and nickel are available now. Sodium-ion might be relatively common in a few years for low-end applications.