I second this by vodka, I'm a zeph farmer myself (doing 1-2 zephs per hour myself), finishing zephs in 4-40 mins, depending on the difficulty. Since you mentioned 20+ characters in an hour, that's like less than 3 minutes per zeph, baseless accusation? exaggeration? or you mind to exhibit to us on this? Just because you're busy, lazy, not being creative or not having any time to play, so you decides that some really hardworking players should their effort denied?
Like what vodka said, if those players can spend the effort to farm that much in few hours, why can't you?