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.
Or maybe you could rephrase why you think browsers are terrible password managers? I’m quite fond of Opera’s Wand.