This article uses "password managers" ambiguously. In my opinion, a browser is a terrible password manager because of what is stated in the "pros" section of the article. My advice aligns with others who have replied here - get a real password manager such as 1password and allow autocomplete="off" to do what it is supposed to do.
Sorry, but which of the two points in the ‘pro’ section (storing truly sensitive visible information and hacking of client-site databases) makes a browser less capable of acting as a password manager than a ‘real’ password manager?
Or maybe you could rephrase why you think browsers are terrible password managers? I’m quite fond of Opera’s Wand.
I'm going to go out on a limb and suggest just because 1password is really really good. So good that I don't even want to try a browser's password manager (especially since I want access to my passwords on multiple browsers and my phone/tablet as well). I'm sure browser password managers have made leaps and bounds, but so as 1password and it's amazing.