> You'd buy a new car because the UI feels a bit dated?

There's a substantial group of people who lease cars, and just get a new car after the lease is up. For that group of people, that's probably a substantial reason along with the exterior styling.

The main reason for leasing cars is (a) wanting to prove how rich they are, and (b) being irrationally afraid of maintenance.

Not with any urgency of course; it's one factor among many. We have a 2015 car that feels like 2005, and a 2018 car that feels like 2022. The terrible map/etc. experience will certainly be a motivator when replacing - and makes old car worth much less on the used market than one that updates.