How apt. Matthias would agree that he's no natural disaster. That's far more damage than he wanted to cause. It's part of why he has such a low opinion of the many demons he's met: they're mindlessly destructive, wasting so many resources in the process. Matthias liked having the option of going back for seconds.

"Do many of mine die because of me?" He's not worried, only curious. Whatever they do when they stop calling him, stop banging on his door, stop screaming up to his window at some awful time of day... It's not his business once he's done with them.