lol, if being one of the least reliable car companies for decades didn't hurt their sales, why would this? They are also stupid overpriced for what they offer.
There's a reason their slogan is "(you don't understand), It's a jeep thing"
They're a lifestyle product and have been for decades. Most of Stellantis is.
Well, given that the article says it caused powertrain failures on the highway, I'd say it's severe enough that it should absolutely cause the manufacturer's stock to drop.