I also agree that there's rarely anything "lazy" about creating art, even when it seems on the surface to be quick and easy. A single shot in a movie can have hundreds of failed takes. That's not to say that artists shouldn't put any effort into what they do, though. Maybe Toriyama was a bit uninspired when designing Super Saiyan Blue (or maybe he toiled for hours figuring it out, we may never know), but the animators that brought it to life certainly weren't. EDIT: I'm not trying to police anyone's language here or whatever, I've been a bit preachy lately, but I'm from my perspective, I can definitely sympathise with an artist's frustration when someone calls them and their work "lazy", when they might've put years of effort into it for all we know.
However, I'm not sure about bringing morality into the question.
On paper, yeah, Super Saiyan God may be simpler design-wise, but is it really that much easier to draw or animate than Super Saiyan 4? I wouldn't say there's much of a difference, like I can't imagine it taking that much longer to bang out a SS4 drawing than a SS God. It's just a different design. In some ways, SS4 might be a little easier since it removes Goku's shirt (phwoar!) and all those pesky folds. The DBS: Broly movie had some lavish SS God shots with the burning aura, the flickering hair and fluttering gi that make it look waaaay more immaculate than SS4 in GT ever did. I'd say it's mostly relative, depending on the scale of the project.
What I'm asking is, are the creators really worse off just for drawing Super Saiyan 4? From what I can gather, most of the creators still like SS4 as much as fans do, hence why it still regularly appears in Heroes and tonnes of other media. If you go into the Fan Works Explosion thread, every single page has at least one SS4 picture, fans of all ages love drawing that form. How hard the form is to draw has probably never been the major issue with it, as far as I know.
A better example of a form that's difficult to draw in every medium is Super Saiyan 3. The long hair is so extra that the artists seem to avoid drawing it wherever possible, or only give it brief cameos outside of combat. It might be why Toriyama introduced the stamina issue, so he could justify phasing it out.



