Final Fantasy XIV is currently fighting with a contradiction of its own design. Extremely fine tuned high-end content requiring perfect execution of rotations and min-maxing of stats exist while those same numbers are hidden from the players. The issue is that the highest end raiders are effectively e-sports players. These are the kind of people who will do things that take a tole on their health to complete content within a single lockout, if not aiming to be world first.

Due to the nature of enrages and damage tuning, the threat of an improperly balanced encounter always exists and goes up with the more jobs introduced to the game. Without some objective measurements to know when something is realistically achievable, these players can (and in fact have, in the case of FFXI's absolute virtue) hurt themselves chasing an impossible goal.

The issue is it must be possible for parties external to SE to check the metrics of a fight for the sake of safety of that particular player segment regardless of how excellent the devs are at balancing the fight. A good first step would be to fill in basic details on the player UI, like what is a player's critical hit chance vs a target of his level under the critical hit tooltip. It's absolutely acceptable to want to display necessary numbers under their own terms, but to not do so at all makes forces the player segment they are catering to use external tools which the dev team does not approve of.

Had the very tools they condemn not exist, many parties trying to complete the 6.2 raid tier prior to the hotfix to tank damage could have found themselves chasing an impossible goal, hurting themselves in much the same way as the players that tried to take down Absolute Virtue in FFXI.