I am not saying that parsers or similar tools are unhelpful in raiding situations. I am saying that to be a decent player, you don't need a parser or similar tool, you just need to care about actually doing well. Like any tool, a parser is only useful to those who a) know how to use them, and b) want to use them. The vast majority of players who want to improve will do so with, or without such tools. For non raid, non EX, non Savage content, parsers and damage meters are not needed. Players who want to do better will, players who don't or simply don;t care, won't.
Personally I don't have a problem with personal performance measurement, though I don't believe that it is necessary for 90% of the game. I do not agree with any form of group parsing or public parsing, ultimately these tools which really only have a place in true end-game content could easily be (ab)used to berate people in the other 90% of the game in wholly inappropriate manners, and so I believe they are not needed. But that's my opinion, and that's where I stand.