What I guess is that the most of crazy amounts of free crowns were received by players who paid before. And those actually had negative crowns balance before, which actually might be equal to what they've spent money on with some glitch multiplier. So hot fix of negative crowns issue made it happen, but not for everyone, because they found a bug and launched new maintenance. If it was in range of thousands, they could forget about it and fix it with global bonuses to everybody. But since it's tens of thousands of free crowns equal to 500usd plus, they need to fix those players manually with two days rollback for them and let's say 5k crowns bonus. If they leave it as is, well... It was a nice try BHG.