Yes, they degrade over time but the expectation is to get 15-20 years and/or 300k to 500k useful miles out of the batteries. No I'm not making that up (and neither are the people making the claim)

Real world experience in Model S/X/3 Tesla's vehicles so far is retaining 90-94% after 100k, and 85-90% after 200k miles.

For my own personal experience, we quickly lost 4-5% but then stabilized and have remained stable over the last 2 years/30k miles.

In the grand scheme of things its not as meaningful a thing as you might expect because what matters more is the maximum range of the passengers. I expect to stop every 100-150 miles for food or bathroom regardless of if I'm driving our EV, or our gas truck. Maybe if circumstances dictate, push to 180-200 but that's not common.

I didn't drive 459 miles straight. Needed 30 minutes of charging to do it. Sounds like time wasted but remember, the car charges while we take meals (we had 2) and bathroom breaks. Had we driven our truck instead we'd have still made the same number of meal stops and bathroom stops.