This only applies to normal though. Many heroic fights still have tight dps checks on heroic. Certainly when not overgeared at least. Thok, Paragons, Durumu, Dark Animus are a few examples.
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The vast majority of non-raid defensive CDs are remaining. Interrupts are still a thing, BoP still exists, etc.
The problem is currently that what normally would be "healing checks" are handled by dps raid CDs. Things like Iron Juggernaut Shock pulses, Dark Shaman Falling Ash recovery, etc. which should be the "healer" phase of the fight are handled by dps now. That doesn't really make sense.
Having only healers having healing Raid CDs is just common sense. Its like tanks topping dps checks (being fixed) and healers topping dps checks, the current situation.
Non-defensive utility is remaining.
Reducing mobility is to balance ranged vs melee.