Because we are converting the content from the "first draft" Web Novel version to the canon published Light Novel version (though we limit the content to stuff for which translations exist, meaning only up to LN volume 8, for now).
Unfortunately the Web Novel content needs to take the short end of the stick for this, because it often contradicts the Light Novel content at this point. I tried to split the pages into LN/WN version, but unfortunately that's too much work for me and the few others who work on this, so I am sorry to say this, but since no one among those who complain about these changes have shown any willingness to help out in the long term, it's unfortunately not possible to sustain the WN content.