[freedomben]

Your concern is well founded given the proliferation of utter shit that is modern car "entertainment" centers. Scare quotes because some safety important things are handled by those. If you don't think so, drive my 2017 Ford Expedition when it's -10F outside and the windshield fogs up beyond visibility levels because the damn defroster (and other environment controls) doesn't work and and the windshield is fogging up. Or try to back up and see the backup-camera glitching out.

However, most of the safety systems software is held to a very high standard, and much happens in embedded systems where the surface level for software foot-guns (such as state) are minimal. I wouldn't worry about buying a new car for these reasons. Though I would try to find one with as many physical buttons as possible.