Sounds like sour grapes about a spell that isn't "good enough".
Just saving an ally's life is what is special. It doesn't matter which tool one uses to do that. You feel that Healing Word is a lousy tool for doing that? I'm not sure that the players whose PCs can then get up from the ground would always agree with that assessment. In our game, we do not bitch that the healbot did not do enough healing (or that the role should require the PC to actually move over and use physical contact, what the heck is that about?

), we are just kind of glad that she did (and that she also probably went over and smacked a foe for a bunch of damage at the same time, or cantriped some other heavily wounded foe, or used the help action, or dodge to give her allies time to recoup).

D&D with Healing Word in it gives the healbot a lot more options than one without it.
And there have been an occasional "DM roll out his butt" AoE spells where Mass Healing Word was the bomb.

Does one get rid of that spell too? If my PC is unconscious on the ground, he can't do much of anything. 4 hit points and he can pull out his heaviest stick and possibly try to help turn the tide of battle (or at least take another shot to the face and go unconscious again so that another PC doesn't take that shot to the face and can keep fighting).