Really, fear mongering and hyperbole? I mean, exactly WHERE did the guy mention anything about hardcore kins in particular doing anything as opposed to an event that in fact will happen (as you yourself acknowledge there about having the nuts already).
He didn't, he put all raiders in the same basket. Which is offensive to me, and should be to you.
I said it earlier, and I'll say it again: meters aren't used by nor will they be abused by "hardcores" or the top raiders. We don't need them, any more than we needed CStats to know if our skills were good enough or our strats worked. We had/have a simple metric for being "good": we succeed or we fail.
No, meters are used and abused by wannabes. And they WILL be abused by wannabes as people in this thread show. Seriously, we've seen that phenomena crop up in posts here via the whole idea of labelling someone a "fail" champ or RK or whatever based on a DPS score. Let's be clear: to top raiders the only "fail" player is one who can't learn in a reasonable amount of time how to help the raid beat the encounters. That's it, not some artificial metric from a DPS meter or anything else.
However, let's be honest: there's always far more wannabes than there are top raiders. And denying that group wide DPS meters won't have an adverse effect on the social milieu of this game is IMO an egrigious example of sticking your head in the sand because you want them. Granted, there are abusive idiots who use any number of measures (whether it be morale totals, or virtue levels, or jewellery items) to pretend to be better than their wannae status/mentality deserves already in this game, but giving those idiots a meter is like unlocking the armory door. It escalates their firepower, and really serves limited if any real purpose.
Okay, lets be honest 
There are far more 'wannabes' on E then there are tyranical raid leaders. Which are the only two type of players that would abuse such a tech IMO.
I see them each and every day in GLFF. These aren't the guys that PUG end game to help other kins, or the guys that write guides for other kins ect.
I mean let's be real: trying to get a global max DPS (which is what meters mainly measure) is the sign of a wannabe, since real top raiders know that you want controlled situational DPS (high at some times, restrained at others, and so on). Adaptive thinking/play is the sign of a top player in general, and how exactly a meter encourages that in anyway shape or form for most people has not been explained here. Oh yes, because you can use them to "shame" underperformers -- who usually have little or nothing to do with a wipe. Let's be honest: wipes are caused in raids here far more by OVER DPSing than under.
See, Hyperbole!
Oh yes, because you can use them to "shame" underperformers
Thank you for making my point for me.
In that sense, what useful purpose do they serve that even remotely counters their destructive potential in the hands of morons? That's right, none.
Several, but obviously you choose to look past them and pass judgement on those that want to use them while at the same time casting doubt and doing everything you can to cast fear on to those that may be on the fence. Guess what, it wont work. The only people you need to convince is the devs that are putting the work into this. Try your fear tactics on them.
OTOH, will we see them? Probably, thanks in part to a coder doing what coders usually do: deciding to unilaterally "fix" the things he found problematic about the UI, with absolutely no thought to the unintended consequences of his "fix".