Poor coding and lack of testing isn't a hack and nothing is compromised. @Mys seems to have acted in good faith and returned the funds while this entire post is blatantly insulting towards him. (Edit: I see you're not responding to my comment and instead downvoted me. Don't think politely responding to the whales commenting vs someone you don't recognize is making you look any better.)
Isn't it the same all over, like the way a Casino will ban a card counter when actually that is a skill. Funny isn't it, a game fixed in such a way the house wins cries foul when due to their poor coding and lack of testing they have the tables turned on them.
Like you say its not a hack, it was gaming of the system and to some may be a step too far in their morals, viz a viz the under arm bowl by Australia to win a test, perfectly acceptable under the rules but roundly condemned throughout the world of cricket.
Personally I think its fine to try to find errors in a system, I would do the same but after verifying the exploit I would have contacted them to fix it and negotiated a fee for the work done that they never did, in this case like keep half, though given the price of Steem its close to $500 which I would imagine most bounties would be around about at.
Since he has been given 2 Million tokens (approx 220 Steem) I guess it all worked out well in the end. Add that to the post earnings and everyone is probably happy now.
There isn't any insulting, just plain fact. Thanks for the care, also the commentor's status has nothing to do with our response.