I never denied that astrologers have attempted methods that try to find the correct Ascendant without any type of birth time indication. In fact, as this was shown, its been the case since the dawn of astrology.
I merely comment that those methods are unreliable, and as a start fail on many concepts, they don't guarantee an accurate chart, nor do they provide good results. There are too many factors involved that make these methods a failure more often than not.
Usually when a method is unreliable and does not posses a high succes rate, the technical defintion is that they "do not functionally work". And thus, are usually discarded. Anyone is free to use them though.
An author's opinion, is just that, an opinion. If they do not show the method working, its nothing more than a "take my word for it" statement.
The fact that they do not practice rectification is not an encouraging factor when analyzing those comments. If the authors would at least make an offer to do the method, would be evidence that they can validate those statements through their actions. Given that they do not, all that can be taken from their statement, is that its nothing more than an opinion, and not an actual method.