He forgot to mention that you could've lost the whole bankroll. As far as the site compromised, could we hope that the website is more secure than it is reliable.
Don't forget that a website owner can always blame a hack for everything. It has happened before that an admin said they got hacked just to run away with the coins.
So when reading "if the website is compromised" I always add "or we just steal them from you" in my mind.
Of course I'm not implying that this could happen here.
Surely you're saying the implication is it COULD happen and not WILL happen.