Agreed, the quote in my opinion captures two important truths: that price and value are not the same thing and that value is subjective. It suggests that the cynic errs in conflating price and value and further that the cynic is also (or as a consequence) poor or deficient at making their own value judgements.

In practice anyone who ever purchases or trades anything implicitly recognizes that value is subjective and not the same thing as price but the confusion continues to trip up a lot of people.