Right, but imagine that with cars not TVs. To show the cost change of a car from 2000 to 2020 I wouldn't show the cost of a 2000-quality car in 2020. I'd show the actual median cost of a car in 2020.
With TVs, though, Best Buy sells 2000s-quality TVs for like 60 bucks. I don't think it makes sense to say that TVs haven't really decreased in price just because most people would prefer to buy the fancier ones.
I just did a check of the msrp for a cheaper Toyota Corolla near San Francisco and it's MSRP is almost exactly the same as the base 2000 Corolla when adjusted for inflation.