Why do you think everyone disliked Keith? He wasn't portrayed on the show as someone who is abrasive. In fact, viewers kinda liked Keith. But why didn't any of the castaways?

Just because the season is edited one way doesn't mean it proves it to be right. To say Keith had as much power in the KTC alliance as Tina (and another thing, why would you take your own word, when you say you haven't seen/thought about Australia in a long time, over Colby?) is crazy. Colby came out and said that there was a predetermined boot order once they reached the merge and were able to out Varner, and that Tina convinced Colby of it.

I believe the KTC alliance is the only time in Survivor history where a male (Keith) rode a female alliance mastermind's (Tina's) coattails to the end. Vecepia went with the flow after Rotu was eliminated, Jenna was in an all female alliance half the time then let Rob do the work, Sandra rode the flow of Pearl Islands chaos, Amber was clearly Rob's puppet, Danni was an underdog who won immunities at the right time, Katie, Danielle, Becky, and Cassandra weren't masterminds of anything.

Keith's strategizing ended in episode 3 when he chose to hold on to Tina for dear life. It came clear to all the other castaways, as none of them liked Keith very much.