Actually, no, it’s not. Not when it’s a programmed and intentional part of the game.
Again, nope. Perhaps you were not here before the deserter feature was implemented. Entire groups were held hostage by tanks and healers that refused to play until they got kicked so that they could join a different group, or until the group gave in to their demands.
Deserter is not perfect, but it’s a necessary evil unless someone has a better suggestion to make. In which case, they can post provide it via the in-game suggestion feature or by posting in a forum that doesn’t fall under the Support branch as these forums are not monitored for in-game feedback.
In the end, there are a whole lot of things to keep you busy in this game beyond queueing for a dungeon/raid/etc.
Actually, when a group of 3+ queue together, their ability to vote-kick is severely limited as it no longer goes by “majority rules” and actually requires a 4th person to agree to the kick. Otherwise, it fails. Likewise, if that group does successfully kick multiple times, they end up on a lengthy cool-down with no option to kick until they have actually completed multiple dungeons without kicking anyone.
This just shows that you’re not exactly familiar with how the forums work. Just because there are blue replies here, does not mean that this is a proper forum for feedback. The blues here are Support Forum Agents, not Community Managers. CMs are the ones who collect feedback from the forums and pass it along to the development team. And no, they do not often post, especially with regards to suggestions as then the entire thread tends to shift to nitpicking what the “blue” said.
If you wanted your feedback to be heard by the correct team, yes.
These need to be reported in-game via the right-click-report feature using the option for cheating. Nothing is done by complaining about them on any of the forums.
Hopefully, that helps you to better understand the purpose of putting constructive feedback in the appropriate place at least.