How would an optional, official parser be toxic?

[Legion88]

The problem with saying they should allow personal or private parsers is that they wouldn't stay private. Someone would figure out how to pull that data from the game. The data would be up on things like FFLogs. If your data *wasn't* there then you'd be excluded from parties. Yeah, people can do some of this now but they have to be careful with what they say in game. Having any sort of parser endorsement by SE will open that sort of discrimination to no longer be against the rules.

Don't fear, this won't happen, because it is already here.
The difference is, now you would be kicked silently or the party would disband and reform without you, then they can directly point at the source of disparity.

And in the sense of PF: As a party leader for PF i can set any rule i wish, like "catboys only", "Underwear glam only" etc.
Because PF is there to exclude people i don't wish to play with or to find people who have the same style and/or taste like myself.