Some people seem incapable to understand, that hybrid or dps healing is just another form of defence!
Forms of Defence:
CCing somebody when he pops an offensive CD, or when your healer cannot heal you.
Spectral Guise, Vanishing etc. are forms of defence.
Mobility contributes to defensive power.
... Selfheal is a form of defence...
CCing the dude who tries to screw your healer, is a form of support.
Intervene, throwing totems, sacrifice for him is support.
Off-healing your healer, is a form of support. You can prevent damage or heal it.
Not every class has the same means
Some classes may have too much of them
(Sacrifice, BoP, off-Heals, Freedom, CC-duration-reduction, a stun and maybe a disorient: too much. See also Shadows, etc.)
Some might be on the shorter side
(The ego-class DK maybe? While very self sustainable, making the CC of the healer of minor importance, the DKs support off his team mates is hardly famous.)
When you talk about hybrid/dps healing, you have to understand all the above.
Or would you guys prefer everybody having tons of CC?
Of course, if you don't care and cannot see beyond your own nose, you frankly should fuck off of public forums until you clean up your psychic mess. Nobody needs your toxic comments.
Btw. I am affraid the OP is thinking 3s and some people answer thinking 2s