kazesenken I can only roll my eyes and stop here. If you truly think the two equate then it would be a waste of everyone's time and my sanity to try and convince you the fact that you are wrong.
For the second part holy shit. You would actually compare criticism in a review to slander and vandalism? You have serious issues if you think the two can be compared.
BTW the author owns the work sure, but they don't own the webpage it is hosted on, it doesn't matter what the author thinks belongs on there if webnovel thinks it nothing is wrong with it being there than it is okay to be there. The fact that webnovel lets you repost it means it is okay to be there. They have the right to decide they don't want it to be there, but unfortunately, they don't have the right to decide if it belongs there, when deciding to post here they agreed to webnovels terms, not webnovel agreeing to their terms and if you truly think they do have the right to decide after my explanation than you are a lost cause. Ultimately if webnovel deems it doesn't belong there it doesn't, but the author has no right to say that a review can't be there, only that they don't want it there. I also feel I should mention that only applies to non-contracted works. When you sign a contract with webnovel they own the work and they can replace the author. In reality that is true with just about any work, a perfect example is Star Wars, George Lukas said what they wanted for the third trilogy is not what his creation is about and he refused to direct it, so Disney which owns the rights replaced him, and webnovel which own the contracted series can replace the current author.
Finally, it really depends on where you live. Where I live at least, I could actually be the one to sue the author for deleting my review as it is a violation of my freedom of speech, if the author sued he'd just be laughed at in secret due to thinking they can sue someone for exercising their rights while attempting to deny someone their rights.
People like you seem to be under the delusion that the author is always in the right. And I totally wasted my time on you so I need to go contemplate why I'm trying to explain simple things to morons.