I'm not an expert on the matter, but to be fair there are lots of things you can do to secure your wallet. Some of them are even discussed in that thread.
There is only one way that is close to being fully secure and that is what the guy who lost his money did. Have your bitcoin wallet on a bootable linux usb stick that you only use for bitcoin transactions.
How is it not secure to do that, assuming you have a sufficiently long decryption key? It seems more secure than what than having $8k on a single drive that can easily fail at any time.
Because anyone who has root on your device can just monitor your keypresses. It doesn't matter how long your decryption key is. Ofcourse storing it on a single drive isn't a good idea either :)