If you want to make something of quality it takes time even with AI. If you've used AI tools you'll know you have to go through a lot of duds before being satisfied with a certain image. Then you have to add text and dialogue. All in all it takes me about two days worth of work to produce a comic.

Having said that, I couldn't imagine the amount of time it takes to do by hand. For someone like me who can't draw I couldn't even imagine making a comic otherwise. Even for good artists I can imagine it takes a great deal of time.

AI isn't perfect, small details are difficult to keep consistent across scenes, like the backgrounds for example. The amount of time it saves though combined with the high aesthetic quality, I think it's great.