How would an optional, official parser be toxic?

[Legion88]

the problem would be the one two punch of parsers and making casual content harder, which a lot of pro-parser people lump together. Casual content being trivial is what keeps parsers from having an impact outside of hard raids. Keep in mind too, if they make parsers legal, eventually they will design content based on people having them, i.e. much more frequent dps checks.

We already have a DPS check in ever second dungeon and more.
You just don't notice him because he is balanced for the min ilvl and in general the average casual player exceeds this ilvl.