Clique helps other healing add-ons not suck as much, yes. I think I already covered that.
Mkay, you are just reading what you want to read, then.
Please understand this: Many healers do not use click-to-cast functionality at all
I could absolutely live without Clique. Clique-style functionality has never been a "plus" for me; when I used Vuhdo (for extended periods of time, as in entire tiers), I don't recall ever using its click-to-cast functionality.
It's just an alternative method of healing, and one that I personally use very little.
I mean, if you use Vuhdo + mouseover macros, and only use Vuhdo's binds for only a handful of very specific spells, then that's effectively what I'm doing. But I'm guessing that is not the case for you. It is certainly not for many, as evidenced by the amount of difficulty many healers have on the Immerseus encounter due to the limitations of their setup.
I could likewise say that mouseover macros help Vuhdo not suck as much, lol. Don't pretend like Vuhdo doesn't have its own limitations. But if it suits the needs of the user, that is what matters. Likewise, Grid is Not a "healing addon" - it is a group/raid frame addon. Many of the people who use it are not healers. And Grid (and Grid2) suits the needs of many people who use it - healers and non-healers alike.
You seem to be thinking that I think Clique is some alternative to a healing addon or a crutch. I don't consider it to be either. I think it is a UI addition that people can elect to use if they want to either heal in a particular way, or simply have different methods of heal/spell delivery for certain reasons (as is in my case).