Voadam
Legend
In 5e Druids and Bards are also full casters with healing from the PH, rangers and paladins have it as half casters, then with supplements there are the sorcerer and warlock subclasses that put healing on their arcane spell list and there are artificers who have it too.And bang goes the Cleric's main reason for existing.
Plus there is HD short rest healing and full recovery long rest for the no magic healing party, along with fighter second wind.
Adding wizards to that list of casters who can heal does not really change the cleric situation.