I mean think about it, dude is a bitcoin developer, he probably knows more about how safety works let alone just being safe, so he had all the knowledge and tools and items he needs to be safe and he still got hacked and all his money was stolen.
knowing the information and implementing it are two different things. you can know all the information about best practices but if you don't actually follow them then it doesn't help!
This shows that we can't be safe if we do not know what we are doing. The best thing we could do right now would be making sure that its on a place that is secure which is cold wallets and offline, that would be a lot better for sure.
yeah if he would have done that then he would still have his 209 bitcoin or whatever it is he supposedly lost.