He made the earth in such a way that earthquakes were a certainty. When he put humans on earth he knew for an absolute certainty that he was condemning millions to violent death.
Not at all. You are assuming that all other variables that we observe are exactly what God (if he exists) intended. We can easily conceive of a planet full of seismic activity in which nobody is hurt.
Are there earthquakes and volcanos that affect nobody? Of course. Can we be certain that current seismic activity has no other explanation except that it has proceeded exactly as God intended? Of course not. In case you haven't noticed humans do interact with the planet.
Therefore it is not a logical certainty that putting human on earth was certain to lead to violent death.