I would be very interested to learn the source of this definition. I am not familiar.
He made it up himself.
The term 'morality' has not changed since it first entered the English lexicon around the 1300's. Stemming from Latin 'moralis', which essentially means 'rules of conduct'. Everyone has their own set of moral standards. It is as unique to them as a fingerprint. Most consider their moral standards to be 'absolute', but there is no such thing as an 'absolute' morality.
If one does not conform to another's concept of 'morality', that person is labelled 'immoral'. You can see this right here in this thread.
Criminal gangs have their own set of morals. Breaking them will result in expulsion from the gang (and quite possibly a lethal result!).
NoName (currently Freddy Figbottom), has his own set of morals just as you have your own set of morals and just as I have my own set of morals. They are not the same. Each of us has unique characteristics about what we consider 'moral'.
'Morals' are closely associated with 'reality', which again, is as unique to each of us as a fingerprint. There is no absolute reality either. This is simply because 'reality' is based on what we observe and what we build as a world model for ourselves from our experiences. Observations, however, must be interpreted. How we interpret it is depending on our own personal model of the world.
A branch of philosophy known as phenomenology discusses and defines these terms, and gives the reasoning for that definition.
Philosophy (not phenomenology) defines terms like 'science' and 'religion' as well, and gives the reasoning for those definitions.
For example: Today, through the arguments put forth by Karl Popper and others, science is defined simply as a set of falsifiable theories.
Religion is defined as a central circular argument, with argument extending from that. The other name for the circular argument is the Argument of Faith. In other words, all religion is based on faith, and faith alone. This is not a fallacy, and is completely rational.
The circular argument fallacy occurs when one tries to prove the initial circular True or False, which cannot be done. This is what a fundamentalist does.