Why, I absolutely agree that I should've reported the bug immediately. But, see, I did not. )) Because it was too much fun and I expected that somebody will raise this topic within 2 turns. Seriously, why did nobody?
Oh, and I think that using hundreds of free gems is immoral, too.
Now seriously. I'd have used the disease demons in the same quantities, free or not. Even at 7 slaves each, with blood income at 100+ per turn its very spammable (practically free), so the impact is minimal. I wouldnt have summoned that useless Geliophagus who died shortly afterwards, and maybe I'd have one less vampire lord who sits in my lab doing nothing.
I can submit one or two more turns to suicide enough slaves before handing my nation to the next player if you wish.