Those rules are worthless with today's modern BRRRR strategy. The best way to build wealth through real estate is through buying and owning real estate. Since In most areas owning just one home won't make you rich, you have to own multiple properties which means you have to buy in a way that lets you get all or most of your money back with every deal.
Having said that my most important criteria is can I buy, rehab and refinance with no money invested in the deal? If I can and it will cash flow just a little, I’m perfectly content with the appreciation, mortgage pay down, and tax savings.
If you’re putting a bunch of money down just to try and meet a 1% rule you will eventually run out of money. I know this from personal experience and after I quickly blew through a couple hundred thousand dollars.
I bought 8 houses in 8 months putting 20% down and just like that I was stuck and couldn’t buy any more. Focus on the metrics and strategy that matters and allows you to grow and scale.
good luck!