What is parsing?

[Imora]

Yeah it's related to a damage meter addon with which you can see the damage/heal you do and your group does. Speaking about it ingame and harassing people with it is a bannable offense not to mention that it is in general against the ToS. But as usual if you don't speak about it not much will happen but SE is enforcing their rules if people get reported for posting the numbers in group chat etc, even if a person asked you about it and you posted them in their request you most likely can get banned cause of this.

Calling it an addon is disingenous.

It's a third party program that sniffs out the packets the game sends and receives, then parses the combat data.

That's all it does. Parse the combat log by packet sniffing.