Some anti-parser people seem to keep forgetting that anyone on the PC who wants to parse is already parsing. I seriously doubt that making this official would dramatically increase the number of people who behave poorly about combat statistics. I still hold to my opinion that building an in-game parser would be a good opportunity for SE to disable sending combat stats to other people's clients. Players could use the parser to optimize their gear and rotations if they so wished and no one would have any grounds to chastise anyone else based on numbers.

Personally, I could care less if anyone parses my numbers. I know some people do and I have yet to hear anything abrasive from anyone I have partied with. Before I do a new instance, I make sure my gear is upgraded appropriately and I listen to any advice. I look at the web for any helpful class tips also. So go ahead and parse. You'll find I am doing fine by most people's standards.

That said, I have met people who play very well and they don't care for parsers. They don't mind if other people parse themselves but they would rather not have their characters 'graded' by others. I suspect that the majority of people who wouldn't use a parser either don't care about it at all or don't want to be ranked. Remember that not everyone who is against programs like ACT are against people parsing their own stats.

What if ACT suddenly stopped working for other party members? No one could upload your parse to fflogs. If someone tried to make anyone a scapegoat, vague comments about anyone's DPS wouldn't hold any water. As it is now, people assume that the accusers are running ACT and can see other people's stats. How much better would it be if people were forced to identify actual player errors like poor gear or poor use of skills rather than make comments about DPS and just kick? Then the player who is holding the group up would at least know what they need to fix. Maybe they'd start using a built in parser to learn their class better if it was convenient to enable.

Again, ACT is already in widespread use and it is annoying enough people to be a divisive issue for the FFXIV community. Adding a party parser to the game won't resolve the argument. Could crippling ACT through restricting what the client can see about other player's numbers and adding a personal parser to the UI be the compromise that most people could live with? Anti-parser people could have their privacy, pro-parser people could still optimize their toons and PS4 people could finally play too.