This Data shows engament with the product for specific platforms and time frames. Not if the game declines or not. You know data and analytics - why do you still post this WITH THAT HEADLINE?
Ufff, you lost some respect here. Way too many qustions are open to use this for anything then "how many accounts logged" not even people or paying customer and so forth.
Also "dying" for an MMO is slow and not fast. Its a slow decay and it begins with the money aka players that pay and the increase of free to play players and bots.
Nothing of the sort can be proven or disproven with the data presented. Also the data is not "clean".
I dislike those "doomsayers" as much as you do but this is not a good way to talk about the topic or with those people.
My opinion:
Is FF14 dying ? No, but it is in a downward trend.
Can you prove that ? No, i can only say in my "bubble" Dt was disliked to the point of un-subbing.
But that is not proving anything! Correct, its an opinion and valid as any others.
Just a random thought: The game is not you and so the sucess or failure of it does not make you less or more of a person. The most fun is with others - take them and play other games with them.