People are buying the cars, but how many of those people will buy the same car next time with those features still missing?
The number of posts I see on the FB groups where people are asking how to turn the parking sensors on, or how to make them more accurate, etc. People don't notice the lack of parking sensors before buying the car because they are ubiquitous on everything nowadays. That is everything except Teslas. Even much cheaper cars have them, so people just take it as read that their fancy new techie car will have them.
Passenger lumbar - that's to taste really. If you regularly have a passenger who has had enjoyed it in previous cars, they'll notice it. Again it's more the case that it is conspiciously absent on a car at this price level.
Tesla have had a lot of sight unseen buyers in the past few years, people who have bought them on the strength of the brand and the purported range (another oft reported "issue" on the FB groups - "why does my car not say X at 100% charge"). It's only once they get them that they realise they're missing all of these quality of life things. It seems to be the case historically that the efficiency/range and supercharger network has made up for these shortcomings, but I'd suggest that won't last forever. Other marques offerings are getting better with each successive release.