That's true, but it will likely be newer studios with younger professionals who are going to be using it, much as Miyazaki doesn't like CGI either yet it's widely used now in anime. The young drive the advances while the older eschew them, that's generally how human progress has been.
I don't even think it will be newer studios and that's it, probably well known studios will adopt it after a production ready solution is presented and battle tested, I doubt many will complain about not making in between frames. Probably newer studios with a smaller budget will just test it first.
