Articles like this are just silly and partially ignorant.
The authors are usually clueless about what it takes to qualify for a mortgage. It’s general info.
A huge factor that varies is the monthly debt payments that show on a credit report before even thinking about buying a house.
Car payments, credit card payments, student loan payments, etc.
Many people with an 800 credit score and 50% down can get turned down for a mortgage for various reasons.
It is possible to buy a $743,000 house with 20% down on $120K annual income. It’s about 37% of gross income.
It’s also possible to get approved to borrow more than one should be comfortable borrowing.