I don't believe you can blanket-statement a type of comic like that.
As with all comics, it's what the artist/creator does with it.
When I decided to do a comic in CG, I approached it no differently than I would one that I was drawing. I visualize the panels and then work to create the image. The tools may be different, but in the end, I'm still creating the same image either way.
But my motivation for doing it in CG wasn't because I *couldn't* draw it. I did it because I've become interested in CG and think my cartoons look neat in 3D. I get a kick when I recognize that something I've created in 3D looks the way it would had I drawn it.
I reject the idea of it being a copout because I know just how much work and time it takes to realize my characters, props, sets, etc. in 3D. I'm not depending on stock Poser models or working with a studio behind me that can do this work for me.
I certainly would reject the notion that my comic can be dismissed based on a blanket value judgement of "all CG comics." Just like I wouldn't believe that a comic was great just because it was hand drawn.
There are enormous ranges of quality/talent in all the types of comics.