It's a plague in UI/UX design for probably the last 6 years, not just Tesla but across the industry. Just lots of arbitrary fads and style change with very little concern for usability. Here is the thing, after the 2nd or 3rd major revision of a software product, the UI usually reasonably optimized. If you then start throwing arbitrary changes on top of it (to keep it 'fresh'), most of the time you just end up de-optimizing the interface and pissing off your user base. Arbitrary change for changes sake is not innovation, or improvement. If you don't make changes based to usability improvements, you will almost always make the usability worse.