Gem4Life If this was an honest review, which allows the author to improve his weaknesses, strengthen them, then I welcome such reviews. If they are written in order to show the pros and cons. And not just reveling in their knowledge of English.
For example, my content is interesting, but the English language leaves much to be desired. I have reviews on three stars, I accept them normally. They were on one star, they just wrote there - that the novel is bad, that I, as an author, are bad, that with my knowledge of the English place I have no place on the site. I deleted it. Since he did not read the novel, he did not understand the essence, if my English were native, I would not laugh at other people with poor knowledge of my native language. As I would understand, the fact that a person is trying, wants to share his thoughts, and he will improve his language as new chapters are published, he will learn English in practice. No need for a person to take away interest in the language. Yes, he does it poorly, but you can understand the essence, one way or another. If it were not interesting, readers would not read.
If you are honest with yourself, if you respect yourself, then you will respect others. This is the norm. I do not delete such reviews, the rating is not so important to me yet, my readers and my desire to share information are important to me. Which I find interesting not only for myself but also useful for others.
I just wrote about this one small chapter in the work devoted to thoughts on writing novels. This is my subjective opinion.
Thanks.