Based on what evidence? This is an algorithm created by a group that has been quite critical of the rewards track and of Blizzard as a whole. Or are you just intent on being angry because you can't play a brain-dead face deck and get your cheap 100 gold every night?
So you say that we (people who actually play more than daily quests) should be happy that we get less free stuff. That's like thanking the goverment for increasing taxes.
Not at all. I also play more than my daily quests. And I'll make (substantially) more gold than before. The simple fact is that under the old system, fast, aggro decks had an unfair advantage over slower decks when it came to gold earnings. A win is a win, whether it takes 3 minutes or 10. But if I prefer to play control decks, why should I have to play 3 times as long as you to get the same gold reward?
It was a good way to tackle ropers and I'm curious if they do something about it because it ruins the game.