The service in question wasn't introducing anything new that'd appear to justify all the recent pushback. It feels like you continue generalizing your statements, while the discussion topic is about what made Prosecraft specifically so preposterous that it warranted the outrage.
> their argument doesn't have to be a peer-reviewed journal, it suffices to say "i don't want my books in your dataset"
It's kind of a blunt statement, but why should they have a say? For example, say I create a website where I publish technical analysis of famous literary works, including basic statistics about a book and a review. Should the authors be able to just take that down? This use is legally protected (as is creating a dataset), so allowing authors to restrict this use seems as arbitrary as allowing them to say that no person can ever bring their books into the country of Moldova or that no one over the age of 50 may read it.
> it's natural for things to change e.g: the project's code, updating servers, partnerships, emergence of third-party tools/libs/services etc
And yet, in this specific situation, all of this is conjecture. Nothing about the project changed in some significant way in 2023 that would warrant this. Further proving it is that the people that are against Prosecraft don't seem to bring up any specific changes or reasons for their stance, only that it is "AI".