In the last 5-8 years there has been a DRAMATIC change in the way vehicles are tested and released. Everyone has become much more focused on electronic features - while at the same time almost everyone is completely outsourcing electronics design and firmware. Cars hit the lots with 10 new flashes waiting. When I started, it was a BIG DEAL if you had a lot held up somewhere in Detroit because of a pending flash.
I've worked with two of the big three, and right now, neither own their traction control, radio, trans, body, ignition, steering, etc controllers. Basically anything. Even engines are being outsourced. I don't just mean the module, but the code on it. One of the mfgs, their engineers can't even SEE radio code or anything much more than general documents. They used to have compiler access to most things, now it's extremely rare.
The mfgs wanted to outsource the development, and now when they need an adjustment to traction control it's a $50, 100, 250, 500,000 charge, BUT, they've also moved the responsibility to the mfgs like Bosch, ConTevis, etc.
Short version is everyone is playing the game to get hot new electronics in cars, to make them seem as advanced as phones - but the work is not being put in besides surface level customer view. I've found obvious glitches in zero mile vehicles this year, but none I can think of from 2000-2013
I would not purchase a 2019 anything right now. I'd allow for two-three years worth of flashes before considering a new car. And that doesn't mean you're "safe" with your old car. You think your 2001 Subaru Outback is going strong? Well, surprise, you're likely to fall victim to a different issue.
As to the article, yes, luxury cars are worse. Most people that don't realize you can't leave your touring Ferarri in the garage not hooked up to a trickle charger, or also picking on Ferarri that the LaFerarri when runs battery dead may require to be loaded on a truck and shipped to a dealer before it'll charge again, or that the new Range Rovers will attempt to void your battery and electronics warranty if they find a radar/laser detector hooked up because THAT is how finicky the electronics system is.
It's funny to me the amount of work that your average Toyota or Chevy vehicle gets relative to lux models that skirt by with less engineering and more features.
As to Cadillac and Lexus, those are just GM and Toyota, all the same things plus some. So fundamentally they're the same, but yes, add features add problem areas.