How would an optional, official parser be toxic?

[Penthea]

Are you omniscient? Because that is the only way you could claim it will have zero impact on player performance.

How do you know it won't help at all?

I didn't say it would have zero impact. Wow. This thread is such an echo chamber. Good god.

As I said before I played WoW before and after parsers were common in the game. The amount of bad players didn't noticeably decrease. But the speed in weeding them out and kicking them did.