I think generally the 4% falls like everything else in retirement, in the "depends" category. Depends on your other income streams, depends on you lifestyle, depends on your personal nature. Nothing is hard and fast in this stuff, you obviously have it figured out. The 4% rule applies to those with a basic understanding of finances and to those who use financial advisors, like the article stated...that strategy generally works. It even said that a more aggressive approach can work, just depends.
I'll have a pension, social security bridge, 401k, a well-funded Roth IRA that I've been investing in since I was in my early 20s, and the sale of a house in a high cost living area. I'll retire at 57, not sure what percentage I'll take but I'd guess it would be 5% or more for the first few years, then dial it back after that. You should use more money while you are young, unless of course your goal is to leave a bunch for your heirs. Again, it just depends on your goals.