What i will say is purely what i think.
Just see, all those "if we have official parser game will be as toxic as wow". And would speak about all "wow do it worse" for nearly all subject.
Many people come from wow, where comunity is more free to do what it want in the game (to some limit like bug exploit and other rule).
On FFXIV all is done for the new player, and the casual player to not have any frustration. "you dont want to have to wait 4 month subscription to get this reward? ok, lets erase the feature we did to thanks fidelity from our customer". "you dont want to confront and justify yourself in PF? ok, we will do all in DF" . When pagos didnt have fate train, most casual did leave and... oh fate train back, miracle. (and i speak CASUAL player, good like bad. just player with low game time ! )
This game is, as i see it, fully for the players with the less gametime, and the people that dont want to have some "serious" gameplay to see most part (all except ultimate). Thing that they dont have in WoW (just see some crying due to 3 dongeon not in the Duty Finder... and the LFR that exists only for those... even if "normal mode" is easy... like raid8 story mode is).
Yes, "good" players are intend to carry the other. Because we are not player in Yoshida's mind, but before all, we are all customers, and time some customers are ok to carry other customers... He is happy because subscription all continue.
If tomorrow he does an official parser (or finally, as he did promise during beta, do the API to do addon like wow) those customers that hate parsers will says "the game become like wow, scandalous" and will probably... go away. . . So customers loss.
This situation (with parser allow but never allow to speak about what they says) is the "best" for him. the player wanting to evolve get their parser (if PC players :-°) the anti-parsers get their "nearly pure game" and all get the hop that the other team finally get rekt (with finally no parser at all or finally official parser)...