This weighing of temporary suffering against eternal bliss is just another example of what a lousy game God is playing. He could have come up with something else - but he didn’t.

Wait, why is an asshole move? He figured out a way to figure out who ought to be rewarded for all eternity after a moment's existence, that's pretty amazing. Think how much of art etc is grappling with the concept of death or non-existence. God instead figured out, "hey, here's a way to sift through a bunch of people with free will and temptation and reward the good ones for all eternity." I'd be impressed!

a huge masochistic asshole.

I mean, I agree but only because I think you're not using the word you mean. (Masochist enjoys harming themselves, you probably mean sociopath or somesuch.) And yeah, I think you'd have to be a masochist to create this potential for infinite reward and then have ungrateful snots running around bitching about a temporary inconvenience.