Tempt healer DPS? Dereliction of duty? And how is that a problem? You already have tanks who don't mitigate when they focus too much on their DPS rotation or neglect their mitigation entirely until a boss fight. You already have DPS who don't dodge mechanics when they focus oo much on their DPS rotation. You already have healers who sometimes forget to look at everyone's HP bars because they fall asleep pressing the single same button over and over again. You already have healers who make a mistake, fail the mechanic, and die. Other roles work to cover for that mistake by using their mitigation, healing, or raising utility in response. Players make mistakes, and they will learn from them. A healer is prone to error just like the rest of the players until they are familiar with the fight encounter and familiar with their job's skills to play it by muscle memory. This is nothing new.
Just because there are worse players in a role, it doesn't mean the whole role should be dragged down because of them. If these players are such a big problem, then SE should get rid of all the tank DPS skills and remove all interactive DPS toolkits just so the tanks and DPS can "focus on the fight" instead of not mitigating properly and dying. Taking damage from avoidable mechanics is never part of their job description. Wiping the party by falling the mechanic and causing everyone in the group to die was never part of their job description.
The reason those DPS skills aren't removed is because tanks and DPS will be boring otherwise. Who wants to sit and wait every 10+ seconds until the boss attacks, knowing that they're not going to do need to react or move until 7+ seconds later while mindlessly spamming the same button as they wait? No, that's why DPS and tanks have their own DPS resource skills to build up in the meantime. That's the added layer of complexity which results in fun when the player gets it right.