In all the hours, pugs, DFs, PFs, roulettes, sales groups, carry groups, friends groups, random 1am drunk runs and whatnot. I've *NEVER* yet once seen anyone asked to leave a party because of what a parser says. I've seen comments about people doing blatantly silly things (we're talking SMNs not using dots, BLMs only casting blizzard here) that you don't need a parser to realise that something is wrong but still, I've never seen someone removed over a group because of it. And it's not for want of experience, I suspect I helped carry half the level 50 community through Titan HM in 2.0 and likely sold it to a good portion of the rest.
The only time I've ever seen DPS be raised as an issue is within unabashed hardcore progression team raiding to strict attendance and performance targets.
And yet everytime this parser thing comes up on the OF. These threads would have you believe that it happens in every other PF farm team. I just don't see it quite frankly.
I do feel that the communities distaste for this sort of thing would make adding this kind of instance parse a bad thing overall though. Given this game's DPS checks in raid content, SE should implement the ability to self parse on dummies however. That is just inexcusable and lazy on SE's part.