I get what you mean; I am also a fussbudget when it comes to these things. But I don't think that's the common reaction. If you look at Dune reviews, there was

I get what you mean; I am also a fussbudget when it comes to these things. But I don't think that's the common reaction. If you look at Dune reviews, there was high praise for the look of the film. Ditto for audience reaction. So I think "coming up on effectively perfect" is a reasonable way to phrase it. Things can always be better, but as long as the effects are good enough to not be distracting to 95% of the audience, I think we'll still see the sort of plateau that will eventually lead to some directors and audiences getting bored enough with CGI that we'll see a revival of practical effects as an aesthetic.