Hello there!
Thank you very much for your contribution! I agree that hearing a couple of lines makes it difficult to judge overall quality. We actually have a completed scene that is entirely dialogue, and the synthesised voiceover is extremely difficult to perceive and destroys the atmosphere. We decided to include such a voiceover because I know there are visually impaired people who rely on screen narrators to read for them, and I believe that adding different voices would provide a much better experience for them. It is obviously only an option; it is not even enabled by default. It's a visual novel, so you should read it.
I disagree with you about my being offensive. I mentioned that I had heard and respected a viewpoint expressed by "mid", but this person did nothing but blame me for things I had not done. So I believe that being a fluffy snowflake is not the appropriate reaction in this case, and I reiterate that I heard and support the opinion. Anyway, thank you for the link to the post you provided; it was very refreshing.
Concerning the indication that the Voiceover is synthesised, I agree with you, and I believe we will definitely include this in the description of the "voiceover" option.
Thank you so much for your detailed response!