I don't even see what was wrong with Coil. I never understood the mentality behind the changes.

There is a lot of content in general. A lot of the people complaining that they didn't get to see the story of coil will also never get around to seeing much of XIV's other content, too. Why don't they complain that there are too many side-quests or classes / jobs. There is a lot of content there that many people will never experience because they don't have the time to grind to 60 on everything. That's how it works. To see the content, you need to commit some time and effort.

I don't know why that was the trigger for the changes that lead to the poor state of FFXIV's end-game right now.