Those percentages mades a lot more sense when they were first proposed, when a typical American family home cost approximately one year's average salary.
These days, with housing prices vastly outpacing wage growth and inflation, maybe not so much.
I could maybe see spending 5%/year on your home, but I wouldn't call it maintenance. Half of your home's value is replaced every decade? Unlikely, unless your remodeling kitchens and bathrooms, upgrading the insulation, flooring, roofing, wiring, windows, siding, and landscaping. All that stuff costs money eventually, but not all at the same time.