Nothing really mentioned about longevity of this new pouch design. The impressive thing about the Tesla batteries is not only are they efficient when it comes to range but they are also built to last 100s of thousands of miles.
https://chicago.suntimes.com/2019/10/18/20919396/tesla-batte...
If you look at companies like Audi, Porsche etc you actually find that they reserve more of the battery capacity for future degradation than Tesla.
But their range is pathetic. Audi e-tron is 204 miles, the Porsche Taycan Turbo is 201. My 100D Model S is 319 miles at 100% SOC (down from 330 miles after ~36k miles), and I get pretty damn close to that if I don't cruise at 80-90 mph (versus the more efficient 70mph). This is with a non-Raven drivetrain; a Raven drivetrain with front permanent synchronous reluctance motor from a Model 3 gets even more range (assume 390 miles is highly optimistic from the EPA test cycle, you're still going to get around 350 miles from it at high speeds or stomping on it). And I get a Supercharger network, which I don't get with non-Tesla vehicles.
I don't much care about long term degradation though; data shows Tesla packs have longevity for hundreds of thousands of miles, and at the rate of battery cost decline [1], I'll be able to swap out the pack for a cheaper, better one in 8-10 years. Why can't legacy automakers do this? Because they don't build the batteries, they're stuck with contracts to folks like LG Chem.
I agree with your link about those older 85kw battery pack owners; Tesla should make them whole instead of nerfing the packs for safety reasons through voltage limits. I assume it'll be resolved with compensation resulting from a class action, which it should be. Looking at public data from a larger cohort of the Model S and X fleet, degradation is typically not substantial.
[1] https://about.bnef.com/blog/battery-pack-prices-fall-as-mark...