Would you like an in-game parser?

[Neophyte]

Then, at the beginning, ask if others don't mind being parsed, and they'll uncheck their personal "hide damage" option, so that everybody will nicely be on the same page.
But, if they don't want, then it's their choice. There is no reason to do a "majority wins" here.

In fact it is 'party leader wins'. Always.
Like he chooses the content, heis the one who decides if you go unsynched or minimumilvl and he decides if he contributes the loot or you roll for it.
So why should you not apply that same logic for parsers?
Party leader decides and all you can do is bail out, if you don't want his settings.