How does SE justify these ten min enrages, but doesnt let anyone know their dps

[Bourne_Endeavor]

This game feeds you your rotation. The little boxes sparkle when they are comboable.
If someone can't look at a potency and know that 2 is larger than 1 then they have a more major issue than bad math. These forums have several threads about optimal DPS rotations. They can't use parsers officially because that gives an official way to segregate players.

Potencies can be entirely misleading. Take, for instance, Samurai. Just looking at the potency numbers, many players will assume Midare is your strongest ability when Shinten far exceeds 720 potency if you properly set up. Likewise, a person isn't going to know how to maximize their DPS only reading numbers since you need to know when to weave your oGCDs for your opener.

The game is already a math exercise for min/maxing. Please do not ask for it to become more of a number crunch. If people in your group are not pulling their weight, talk to them. If you complaining about a PUG, then make a party, and try again. If it was purely a number puzzle, it would diminish the game and the role of DPS into little more than grade school arithmetic.

Going by this and the OP, all I can say is that in this case you're both making it very clear that parsers would turn the game into the MMORPG equivalent of painting by numbers. There's no skill or judgement involved in painting by numbers, just following the numbers. People decry the skill of players already. How will parsers help increase skill when they encourage slavishly following specific rotations and timings - effectively painting by numbers? That reduces the skill needed to that of memorizing a routine and never deviating.

This game is already paint by numbers more or less. You follow a set rotation someone posts online and scarcely deviant. You may have slight difference, like the 1-Sen opener versus 3-Sen, however it's negligible. Parses allow people who may not even realizing they're doing considerably less damage to see tangible numbers. A lot of people don't understand how openers work or assume they're doing more damage than they actually are. The idea there would be wide spread ridicule only applies if the devs stop policing harassment. If you have a parse now and call someone out in-game, you can be reported. That wouldn't change with an officially sanctioned system. Besides, more often than not, if you step into EX or Savage content, someone has ACT running anyway. They may as well embrace it.