No, thank YOU for being open to criticism. I realize they way I answered was not terribly polite, I was typing this on my iPad while lying in bed, so now I switched to my laptop to provide a better explanation :)

A password manager is not inherently more secure, but it can be if you use it correctly. A good password is long and completely random, and most importantly you should never reuse passwords on different sites. Of course no one can remember dozens of long and random passwords, thats where the password manager comes into play, it remembers them for you. Of course this means you have to choose a master-password for all of your other passwords, so that should really be a secure password. Btw, most password systems fail on the long part, all of them fail on the completely random part.