Frankly, the Blizzard quote in that article makes me feel more secure; not less.
The author tries to spin it to sound like Blizzard is trying to pass the blame to anyone who interacts with the outside world. The author is also a sensationalist who doesn't understand logic. All the Blizzard employee says is the people he has confirmed that were compromised even with authenticators also had extremely compromised PCs.
Never once has the company said "it's your fault unless you get an authenticator". They HIGHLY suggest you get one though, because it improves security. Random posters have said "it's your fault". I don't agree with that myself, except for the obvious cases. If you have a compromised PC from complete lack of effort towards your personal security, then it pretty much is your fault.
But sometimes shit happens--for instance, it doesn't matter how much you pay someone else for home security, a determined thief is still going to find a way in. It's the same with the digital world. There IS NEVER a 100% secure ANYTHING. From the known facts, I personally don't see how anyone could respect people spouting off that it's Blizzard's fault. I can see people getting mad at being labelled as one of 'the stupid ones', when they truly have been security conscious; but if you want to ever be happy on the internet, you should also know how to shrug that off...cause that's the same kind of stupid as the people raging about how it's all Blizzard's fault.
some people think some passwords are strong even when they are fairly weak. In some cases, they can manage to utilize all types of characters but still make it weak by making it only 6-8 characters (what is battle.net's minimum character count?).
I think mine is somewhere between 10-15 characters, and I haven't even bothered trying to memorize it. If my system was compromised, I would be fairly screwed on many accounts (a game would be the least of my worries), since I really only have a single password (a master one that unlocks the hoard of other passwords). I just copy/paste it from the manager, since it looks like a keyboard mash to the extreme.
People don't realize that, even if utilizing random characters, a short password can still be "cracked" using some sophisticated processing methods. Short ones, no matter how complicated, can be solved by modern computers between hours and days.
People don't take passwords seriously enough at times, and when it comes to battle.net accounts, there is quite a bit for willing individuals to take advantage of.
Of course, is there are actually issues on Blizzard's end, anything where account information can be seen by pioneering individuals on it's journey between user and server, then even the most insane password would be worthless.
Hopefully, for the sake of all of us, the issue is individuals with weak passwords and/or compromised systems in some shape or form. It could even be both that AND an issue on Blizzard's end, if it's something along the lines of hackers being able to easily see something important. Even hashed passwords aren't safe, but if long enough, like over 10 characters, it takes a very long time (years) to crack with today's most powerful systems. And for that, you both have to never change passwords (which most unfortunately don't do often), and probably draw a lot of attention to make "you" specifically a valuable target (as opposed to a random target - which is rarely worth the processing power).