The video notes he is "championing" - that is Fi parenting through Ne!!! That's the ENFP's use of Ne!
Of course, the video claims Fe values are universal and Fi values are about what an individual relates to - when it's almost the opposite (the authors of the video don't know what they're talking about there). Fi-dom are fantastic listeners, who use their whole mind to absorb what others are saying, to get at their psychology.
Instead, what Garfield displays, is the Ne tendency to be concerned with matters which reflect himself. That's Ne, not Fi!
The weak point in the emotional life of the extraverted intuitive is his vanity. His enthusiasm is usually only aroused by something in which he himself can play an important part. He is thrilled by other people only when they have some value for his personal life, or, more especially, when they appreciate something in him.
They note how he talks without noticing how others are reacting....which sounds just like this Ne description:
Here, also, there will be found great liveliness and flexibility in the feelings, which are very individual in their mode of expression. Many clever people belong to this type, and the majority of artists. There is a lively expression of feeling, but it does not last long, the intuitive person being more concerned with expressing himself, and making a strong momentary impression on others, than with the formation of a lasting relationship. To this type, also, belong those people who carry on entire conversations without paying the slightest attention to the replies or remarks of the other person.
Robin Williams was an addict and also a performer. He seemed very different in interviews where he was not performing - more melancholy, subdued, and sensitive.