To me GoldenOne comparison is totally relevant. I do not see anything wrong making comparison to another piece of gear which shares similar function, regardless of price. 6Moons also mentioned AMP-23R in their review.
There are all sorts of positive and negative reviews and comparisons out there, one make their decision based on their own interpretation of all the reviews.
Lets talk about an opposite scenario.
What if I read Slim1970 review, thinking the Silver Fox is such a great amp, paid 4 grand to buy it and didn't like it?
Do I blame Slim1970, "red flag" anyones comment? No, it is my decision after all
I choose to read the review, I choose to believe it and I choose to buy the amp.
I fully support GoldenOne (and anyone) to freely express what they feel, as long as the comment is civilized and respectful.