It wasn't boring to me before them and won't be after. In fact, knowing the lying, arrogant punks were put in their place makes the show even more enjoyable for me.
Rob puffs himself up like he's a demigod, insulting the intelligence of others, and he got bounced because he wasn't paying enough attention to copy the word "Philippines" off of a map! I haven't been so satisfied since the emotionally abusive Jonathan and his slavish wife Victoria bit the dust because he misread a clue. But I will give Rob credit for being loving and affectionate to Amber. Unlike Jonathan, he never threw a tantrum and reduced his wife to tears.
Well, to each his own, although I must admit I find your description of them a little overboard. Rob and Amber were competitive, and not out to make "friends" of everyone in the race, like Kentucky.
A spelling error, one that almost anyone might make in the heat of a competitive race like that, arrogant or not, cost them the race. In addition to their competitiveness, I admire Rob and Amber for not grousing on and on about how Uchenna and Joyce were given a most unfair break in being allowed to board that airplane after the gate had already closed. In this day of post 9-11, I find it most odd that that event was allowed to occur.