Your numbers would make sense if people lived within their means, but they don't. The median income in 2020 was 67k. A lot of people who make below or low 6 figures are buying these cars without thinking twice. At least for trucks sometimes they have a truck allowance through work but I'd wager a healthy bet that lots of folks have a higher car payment than mortgage payment.I'm not worried about missing out on features in a sense that I always need the newest features. I'm worried about missing out on features because I tend to keep my vehicles for 8-10+ years. So if there's a mid cycle refresh or enhancement that significant improves the electronics in a car, I'd wait for that because it might be another 3-4 years before another refresh. If I bought the pre mid cycle refresh, that vehicle would spend 1/3 of its usable life with an older interior/electronics. For someone who will tend to keep their vehicles the same way that I do, a year or two after a mid cycle refresh tends to be the optimal timing.
So the elephant in the room is what is the average individual or annual income of the typical Tahoe/Yukon/Suburban buyer?
I would imagine it the average family income has to be at least $400k/year in a rural or suburban area and probably another $100-200k on top of that for an urban area. Individual income is probably 225+k/year to be able to afford these vehicles.
I make above your listed family income and I am still biting my nails to buy a 75k car.