Olinda may be voted out but if she ever produces a Jazz album, I'll purchase it because I think she has great vocals.
In life, just because you win an award or title does not mean you are 'the best' and that those who didn't win are lousy. To put is simply, the classmate that always gets to be No. 1 in place will not necessarily end up the most successful career-wise or whatever other yardsticks you choose to use.
In Singapore Idols, as in American Idols and whatever-idols, it's a matter of who manages to get the most fired-up fans who'll call again and again and again to vote for them. Sounds more like a popularity vote than anything.
This probably reinforces one lesson about life - sometimes, it's not the hard work or talent that counts, but the Public Relations and the currying favour and licking boots that count. I mean, it's not usually the 'best' employee that gets the promotion, rather, it's the boss' pet(s).