“Normal” as in the normalization of deviance is defined as: The gradual process through which unacceptable practice or standards become acceptable.

People can have older style infotainment systems with fewer to virtually no bugs and significantly less performance or they can have what are essentially computers with much better performance and significantly more bugs.

The trend has been towards better performance at the cost of normalizing bugs, but at some point maybe we will normalize poor performance to minimize bugs.

Better performance in what sense?

Does your car really need to be able to run a web-browser?

It definitely doesn’t, but maybe that is what people want?

Do electric cars with fragile entertainment systems get better mileage? Are they safer in an accident?

Humans do seem to be attracted to bright flashing lights, so perhaps a car running a web browser appeals to that particular defect in our make up.

Better performance in the same way a laptop performs better than a microwave, or a mechanical device.

People were fine with mechanical speedometers, but manufactures moved to microprocessors because of cost/features, and seem to be moving towards mainstream computers for the same reason.

People don't need these features. A mechanical speedo would suffice, but they seem to want them.

Along the same lines, people would be fine if the only car available were some kind of utilitarian hatch or station wagon, but people want cars with different attributes and manufactures offer and optimize for those attributes.

Having in car entertainment can help to make longer refueling stops more pleasant, which arguably helps with adoption. But it's not a requirement. Tesla could have skipped it and lived with however many different sales, in the same way including it led to different sales.