I wonder why not provide a switch to turn off the star eater? Bury it under some menus so people don’t use it unless they go looking.
Many people do not see that issue or claim that it was 'fixed', because they do not have optics sharp enough to resolve stars to 1x1 or 2x2 pixels.
https://petapixel.com/2018/06/08/sonys-star-eater-problem-ha...
Those are noise power density graphs that show that signal went through a low-pass filter. On Sony cameras without 'star-eater' and cameras from other manufacturers it is flat.
But I admit that this issue is most noticeable on S-series (low resolution/high sensitivity) cameras, as their lower resolution makes it easier to resolve stars down to 3x3 pixel size. Normal and R-series cameras have such high resolution that it is hard to notice and not much of a problem in amateur astrophotography.
I have not seen any proper tests of latest A7S III as it was only released last month.
But those features are designed to be beneficial in most cases, and this article is about the edge cases where some faint stars, in some photographs might look a little different if you examine the image at 1:1. Its an interesting article from a technical standpoint, but I'd say the feature does more good than harm in the vast vast majority of situations.
Also, most dedicated astro folks, especially the ones doing deep space imaging (i.e. beyond just capturing the mikly way) are probably using dedicated astro cameras.