I'm mostly annoyed that I didn't know about this, and haven't read any of these, until just now. Some of those are forty pages long, and they're just gone from the book. I wish publishers would at least note the cuts, like a movie edited for TV.
That transparency would be nice to see, but that's never really been the case, neither for editing movies nor other media, and I kinda don't think it's viewed as desirable by the powers that be.
There once was a German website that documented cuts made to movies (and I think other media) for their German version (schnittberichte.de, literally "cut reports"). The site was shut down due to youth protection issues forever ago. I'm not sure whether it was because they sometimes maybe had images showing the (usually violent) content that had been cut or whether the fact they collected evidence of otherwise undocumented cuts was a thorn in the BPjM's (German youth protection authority) side. They were probably hosted from within Germany, so it could easily just have been "you're providing unrestricted access from within Germany to age restricted content, you can't do that".
Well "youth protection" is almost always an excuse for control and censorship, which I might be stating the obvious there.