Look what just happened in Duty !

[Xayoc]

Like I said a bit earlier, the rule on harassment is open ended. It doesn't have to be 100% spelled out the way you want, if it did, there's would be far too many rules because everyone would want specific rules for everything.

Commentary: This is precisely the problem. For this specific instance it is required that it be explicitly laid out so that the bads do not cause more nonsense for the already overworked Square-Enix customer service team.

Here is a piece where Yoshi speaks about it for the first time !

こんにちは。
Hello,
ダンジョン攻略中無断で放置する方がいます。 戦闘にも参加せず攻略不可の場合、こちらからその放置者に何もすることが出来ず 退室しなきゃいけません。 そうなるとペナルティが来るのはこちら。おかしくありませんか？ 過半数以上の同意での追放機能などが欲しいです。
There are players that goes AFK without saying anything. Because of this person not participating it’s impossible to complete the dungeon, and there is nothing for the rest of us to do but to leave. When that happens we’re the one getting the penalty, don’t you think that’s weird? I would like a vote kick feature.
コンテンツファインダー中に、投票などを通してパーティメンバーをキックする機能は、技術的には難しいものでは> なく、実装を予定しています。
To have a vote kick feature while using the Duty Finder is not hard to do technically, and we are planning to release.
ただし、気に入らないプレイヤーを故意に排除するといったように悪用される危険性があるため、 極力問題が起きないような仕組み作りに注力しています。そのため、具体的な実装時期については 確定していませんが、パッチ2.1に導入するかどうかを含めて検討しています。
However, there is a possibility of this feature being used wrongfully, therefore we are focusing to make sure these type of problems don’t occur as much as possible. For that reason, the release timing is not confirmed yet, we are looking into if we’re going to implement this in patch 2.1.

Observation: Again you fail to point out where Yoshi, Square, or any developer has said, 'vote kicking for poor performance is not the intended use for the vote kick function' or anything remotely to that effect. Until this is specifically prohibited and actionable it will be used by players that don't want to deal with wiping to easy content.