San Diegan I know plenty of folks who are single income households, make around 75k and own a median priced home. This was very possible just 6 years ago. It’s only now that this is not possible due to the income/home price ratio going completely out of wack.
Remember, there are many retired homeowners with little income who bought 20 or 30 yrs ago that equally skew the statistics in the other direction, for example my Aunt is 70years old, owns a home worth $800,000 in Laguna Hills but earns like 35k/yr from her retirement and benefits! so your math is of little value!