I can help with the translation, if you are interested, but I think it would be a waste of time and energy.
The whole attitude is like - for that amount of money it should be much more professional.
He compares it to Michael Rinaldi's books...
I think he misses the fact that the build was not made and documented with the book in mind from the start.
And there's no mention of the other books you have published too.
Well, he doesn't like it. What can you do?
By the way, it can be bought in digital version here: