In-Game Parser.

[Felessan]

The amount of new players/casual players that are hitting end game and have only expierenced echo and over geared situations is the majority. This individuals dont know how to handle mechanics because they haven't had to learn them, They dont fully understand all the actions they have access too, and havent been pushed to learn how to get better with gated content. (I find a lot of people have never tried titan ex, and will never learn the fight, as they no longer need to clear it to progress.)

I have a story for you.
Today I went to the WoD and run was a bit rough. We wiped several times, people complained about various job non-performance but we still beat it and no particular names were called. And how this run was looked based from parser perspective - top 5 (out of 15) dps was something like 460, 420, 380, 330, 280 dps. And I can image the amount of rage those numbers would instill in already quite heated situation if people would be allowed to actually see them.

It's often more important for success to have tolerance and patience than to see numbers .

Everyone that is against an in-game parser: What is your issue with a self-only parser?

It's almost pointless, no? Casual crowd know nothing about baseline and this number brings no significance for them, 200 dps number could be also considered "good" if it not compared against anything else.
It brings some profit only for a few console players that wants to improve but have no access to 3rd party app (or don't want to use it) and don't have friends who can do it for them.