I just wanted to point out a double standard...

[NoctisUmbra]

It's not hard to tell when somebody in your party is parsing, but is all hush hush about it either. You just need to know what to look for.

Very often at the end of soldiery runs or any kind of 4 man dungeon I'll receive much more commendations than I would expect as a dps (it typically goes to the tank that performs well or the healer) or I'll have someone compliment me in some implicit way, without any quantitative data. Like an affirmative nod that is grounded in evidence, but cannot be spoken publicly.

People always talk about players who parse being abusive or mean. That's because those are the only times they know a person is parsing. The players who parse regularly, and say nothing that explicitly reveals this will go completely unnoticed. Players who provide valuable constructive advice/criticism without mentioning specific numbers, or who are able to quickly find the source of the party's problem will often be celebrated for doing so seemingly without parsing, even though they likely were.

People see what they want to see. Players who are anti-parsers are typically players who know, in the back of their mind at least, that they do not perform as well as they are required by the content they wish to participate in and are afraid of being called out.

EDIT:

I should further add that in the case of lower level dungeons - where players are leveling up and learning - the process is sorely lacking in valuable DPS walls. The dungeons are far too easy. The class quests utterly useless. Teaching a player who is leveling up a DPS class/job how to properly play that class/job should be the focus of the class/job quests. Without hitting a certain mark, they should be unable to progress. The mark doesn't have to be set very high - something that can easily be reached with the right rotation but is rather difficult without.