This isn't the first recent game where I've seen devs say 'we don't like the negative effects of public DPS meters'. Makes me wonder what's happening in those games that do permit it; eg. I've not played WoW since release. Of course it had a DPS meter (as an add-on, iirc), but back then peeps just used it as an analysis tool for both self and raid improvement..
DPS meters have been used as a weeding tool for inexperienced players for the longest time. People will always be pissed if a random BRNM boss of all things takes 10 minutes per run. Some people are surprised when I said that a full guile team proper clear time is 5-6 minutes per boss in a 3-star dungeon, and there will be that rare group of people who is unafraid to reveal that they are only doing 5% of the total boss damage, and explained what the low dps was doing wrong (spacebarring, not using correct crystals etc.)
The buff to the HP and endurance to dungeons have not only forced us to get out of that burn everything mentality, but also showed that just a weaker player is enough to pull the whole team down. A DPS meter not only tracks how much you/your party does, but also reflects your performance versus a common benchmark. I believe that this will be useful especially after the Arsenal update where I am pretty sure there will still be a huge majority who don't know how to roll their characters.