What if your base os is compromised and you use a livecd whilst being offline to store the coins.....can this make you unsafe?
The only risk from what I see in the article is that if you use software to originally set up your wallet that actually originated from a criminal trying to steal your coins with this method, they could steal any coins you subsequently deposit.
They cannot hack a wallet that is secure. They can only put a backdoor in it when it was first created. And only if you use software that is not open-source and vetted by anyone besides the criminal.