Anime already cuts corners by using cheap 3d models in place of 2d hand drawn objects.
The more rigid the object, the better this works. 3d cars look better than 2d cars, even in an otherwise 2d show. Mechs look a bit worse. And human characters look horrible.
Yet anime studios still do it. Including for critical highlight scenes like dance scenes (Check out Love live dance scens), because it is so, so hard to draw humans dancing.
So if anime studios are willing to do something, that looks obviously bad, as a widespread practice. There'll be 0 barriers to AI inbetweening adaptation, which would likely look BETTER than human inbetweening within a year of release.
AI anime art has already wiped out the lower-end of patreon artists, and is heavily impacting the mid-tier. Because AI has gotten more technically proficient than the average mid-tier artist. Pretty much only the higher-end can hold their heads above water. Or they have to transition to drawing comics with storylines, instead of just simple images.
A lot of the dancing stuff is about the ability to spin the camera around a moving subject to the music, which is quite difficult otherwise.
There's a lot of impressive work in 3D animation that looks quite good. Outside of Bandai Namco's work on idol anime, Studio Orange has made some of the best looking 3D modeled anime lately and a few other studios have been getting into it. I'm more familiar with video game animation, where Arcsys Works has made great strides too, by using animation on threes, manual tweening, stretch and squish bones, and carefully UV mapped textures for crisp color boundaries.
It was a major consideration for Initial D, which is pretty much the definitive car anime. Animating movement in tandem with dynamic camera movement is very difficult (also why shows like Love Live use 3DCGI for dance scenes, and why Disney was using 3D elements in films like Beauty and the Beast) and modeling accurate vehicle physics in hand drawn animation is also difficult. It simply wouldn't have been viable without 3D animation.
I have never seen Bluey but from the software you linked it is clear that it looks 2D because of how inconsistent the character looks at different angles, for example when you rotate the character the mouth changes position, the hands jump from one sprite to another, it's cel shading with a lot of 2D element on top, it works with simple animation but for anime I'm not optimistic.
I've seen 3D animation where the people are still quite fluid and not awful to look at. Not as good as 2D animation but still pretty good and more than watchable.
Friend, but anime was never about quality of animation. In fact, it was a prime example how to cut corners to get to animations. That was always the case. It doesn't reflect on the quality of character designs, environments, storytelling, camera action, directing, etc. Motion was not one of them; Never was. Anime is the first place I'd expect to see new ground breaking, just like it was with all the tools from 90's onwards (Toonz, anyone?).
Anime is much better at action animation than anyone else, simply because noone else remembers how to do it because they've stopped trying.
I'm not sure if I'll be able to find this, but there's an episode of Steven Universe with an extended reference to a scene from Kill la Kill of a transformation sequence.
It looks maybe 1% as good; not only that, but the character turns into a pure white silhouette for the entire transformation because it doesn't have a character design suitable for being transformed. (Instead it has one designed to make the animators' lives easier.)
Most of that could be dealt with via proper compositing of the shots and managing the layers/lights. When it's good, you only recognize the 3d computer drawn effect because it's so good that you realize no human could have ever done this.
When it's bad, you recognize that it's janky crap tier 3d animation from a company that either didn't care or was put under such a tight timeline that they simply couldn't care.
The more rigid the object, the better this works. 3d cars look better than 2d cars, even in an otherwise 2d show. Mechs look a bit worse. And human characters look horrible.
Yet anime studios still do it. Including for critical highlight scenes like dance scenes (Check out Love live dance scens), because it is so, so hard to draw humans dancing.
So if anime studios are willing to do something, that looks obviously bad, as a widespread practice. There'll be 0 barriers to AI inbetweening adaptation, which would likely look BETTER than human inbetweening within a year of release.
AI anime art has already wiped out the lower-end of patreon artists, and is heavily impacting the mid-tier. Because AI has gotten more technically proficient than the average mid-tier artist. Pretty much only the higher-end can hold their heads above water. Or they have to transition to drawing comics with storylines, instead of just simple images.