Mixing and changing 5% twice a week sounds like work. I've seen the math sequences showing frequent small does not out dilute less frequent large. It is simple math.
But regardless of math (who can trust that stuff anyway), doing twice weekly water changes sounds like work. Worth mentioning that twice. And 3 years down the road, is it something that you can maintain, each and every week? Maybe, maybe not. I do 50g change twice a month, works well, everything is happy and it takes 40 minutes of my time in a month.
Yes, I've seen that article, and others, I believe Randy even wrote something about it. Still think it's dumb, and a lot of work. I'll stick with big. Hate work
