It benefits the heals-only playstyle because they don't want to DPS. You seem to be mistaken, and believe that the heals-only healer cares about quick clears. They don't, otherwise they'd be contributing to the group's overall DPS. A clear is a clear, whether it takes 15 minutes, or 30.
A clear is everyone's objective for entering an instance. Both a DPSing healer and a heals-only healer will get this reward. You can bring up EX/Savage (enrage timers), but heals-only healers get clears here too. You do know that healers cannot be condemned for the group not beating an enrage timer, correct? Sure it still happens, and normally comes from the player who hinders their own DPS rotation by failing mechanics and dying. This player, is very quick to blame a healer if they are DPSing.
I will name one of those situations: When the devs do their testing before releasing content. The whole 'healer DPS isn't factored into clears' thing. Don't get me wrong. I never said healers not DPSing isn't a problem. It just doesn't lead to anything game breaking if they chose not to do it, nor is it as big of an issue as everyone makes it. I specifically stated that the problem is the design of content (and to a further extent, the way healers are designed), and the attitudes of the playerbase.
Both Tanks and DPS jobs are designed in a way that they always have to be pushing something. This is not the case for healers. However, healers are the only ones tasked with keeping everyone alive. It is impossible with the way the game is designed for healers to not have downtime. What they choose to do with this downtime is where the meta and players attitudes come in. The faulty attitudes comes from those adamant about scorning healers for not DPSing, and the healers who outright refuse to add offensive skills to combat.
That said, nothing makes me feel more worthless as a healer than when my group still clears a boss with over 50% HP and I'm lying on the floor. It's like, "Why am I even here?" Again, bad design. This should not even be possible if SE wants healers to be healers.
Of course not. You're a healer. It is not good design for healers to be able to keep everyone alive whilst putting up comparable numbers to actual DPS jobs. Healers in this game are already quite powerful enough as it is.
My thoughts exactly. But you're raising a different issue than healer DPS or lack of it. This situation is a faulty group, not a faulty healer. I've carried clears before. They're not rewarding. In fact, I usually feel like crap afterwards thinking it was all my fault even though in the back of my head I know I was contributing 110% to that group, and likely still got scolded because I was DPSing. Do you feel this is rewarding?
Healer DPS is only beneficial if they can reliably do it and still take care of the party. If they cannot, then it hurts the party. There is no disputing this. Your primary role and the reason why you are brought into content is to heal, and if you're not doing it you will be kicked far more swiftly than not DPSing. However, there is also no disputing that competent healer DPS benefits everyone, but I already made that point in my OP.