No, you're not wrong.
Frank's output the last several years is baffling. Is he doing these lazy, hasty cartoons because he just doesn't give a **** anymore, or does he have some kind of debilitating condition that won't allow him to draw like he used to?
If I had to guess, it's a little of both.
The last time it seems like he put any effort into anything was 300 and then the last Sin City book, which came out well over 20 years ago. Since then, his work has gotten worse and worse.
He's only finished three projects in the last two decades; Dark Knight Strikes Again, Holy Terror, and Xerxes. They were bad. Xerxes was probably the worst. It made no sense and the artwork was a mess. I think the maligned Holy Terror might actually be the best of the three, cause he seemed to at least be trying for the most part, til he got bored and then just ended the story abruptly.
These days he makes insane amounts of money by churning out these doodles, not unlike Picasso and Dali paying for their expensive meals by drawing on napkins in their later life.
I've tried to chronicle all the "later era" Miller work as I can in this thread, and I honestly think there have only been two pieces that look to me like any effort was put into them, or that they resemble Miller of old.
The first one is this Spider-Man commission he did for comics artist Ron Lim. It's still very sloppy, but at least it's reminiscent of his drawings in the mid-90s.
I think it looks similar to how he drew Spidey for the cover of his hardcover collection. I like how he draws Spidey's individual toes. I don't think I've ever seen anyone else do that.
The other recent piece that I can think can stand up with Frank's older work is a really cool Batman commission he did about 5-10 years back.
It's got plenty of detail and lines, and it looks like he really took his time with it.
DC eventually used it as a variant cover, but like all his recent stuff, the shiny computer coloring didn't look fantastic. Nobody will ever be able to match what Lynn Varley did with color on his stuff. Still, this is probably the best cover he's done in 20 years.
I think these two images are excellent, but I understand if others look at these and think they're lousy compared to his work in the 80s and 90s.
I can't really defend the stuff he's churning out these days. I really wish I knew what the reasoning behind it is.