system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: 20% Downpayments for Houses are Unrealistic

So, I've been looking at purchasing a home in the next few years. All of the calculators and tools that I've seen assume a 20% downpayment plus closing costs out of pocket. Yet, all of the banks around me are advertising no or low-money down loans. 

Given the economic trends in the housing market and the current rate of inflation, it seems nearly impossible for the average person to save up 20% of a loan for a house and be able to pay that up front. It also doesn't appear that 20% is really the norm any more. Accordingly, I believe that we should stop giving out this outdated advice. It is contributing to the low rate of home ownership.
gpt
In the US you can get a loan for less than 20% down, but typically you'll be required to maintain mortgage insurance that adds 0.5-1% of the loan balance per year. The advice is just that it's easier to qualify and costs a lot less to borrow if you have a 20% down payment.