Usually from what I have seen, most SWE's partners are also in tech or "white collar adjacent" making similar money. Which makes a household income of $270k, putting them in somewhere around the top ~7.5%.

I have seen some of that, but there is still plenty of non-tech partners, especially if the tech half is at a non-tech company. In my experience, the managers are the ones most likely to have a high earning spouse. It seems like most of the managers I know have a spouse making $100k+. I don't make as much as others, but I can't even imagine how good my life could be if my wife made the same amount as me so we had a combined income close to $200k.

It's also kind of wild to think that 1 out of 6 households in the US is making $200k+. I get that many of them are in higher cost of living areas where wages are higher, but still WTF. On the other hand, it's something like 1 out of 4 households are making under $50k. Makes me wonder how many of those are retirees vs working age, and what the median household income would be for 25-55yo vs the entire population.