People seem to like people who are very confident about their ideas, rather than people that change their mind, even for apparently good reasons.

I'd certainly hope that I'm not one of the people who likes confident people, not mind changing people.

I have also found that since changing my mind more often as a result of reading Less Wrong, I've had people greatly approve of me publicly stating that I was wrong, and that someone has convinced me. So that's some evidence against what you're claiming.