I don't know why people automatically assume a vote-to-kick option would be abused to kick the undergeared.

In my worst experience, Tera for example, the 15man battlegrounds. Occasionally a player would pop up with incredibly low item level. Think L30/40 white/green gear at L60. Or a 60 would put on low level gear as a joke (not the reflect types.) Or someone would prevent the afk auto-kick by running into a wall so they could get the other 14 people to carry them to their points. Members would repeatedly try to kick them, but there's always that one person who goes "NO that would be mean ;_; " Being THAT undergeared, you are helping nothing. Purposely trying to make your team lose, or being afk expecting a carry, I don't know why anyone wouldn't kick them.

Far more often people abuse the fact that a vote-to-kick system doesn't exist or is flawed, rather than dicks abusing it because you aren't "overgeared" for an instance.