That's clutching at straws. The point is that the media have got hold of it because Folau put it up on his Players Voice letter. It's being played out as though it was some iron clad agreement between him and RA. As QH says even RA haven't run with it. It has zero substance legally.
Actually it does. It keeps on being reported that Folau doesn't know what he did wrong and he didn't understand around what they expected from him with regards to social media. The letter is pretty bloody clear that he did understand and confirmed that he made a verbal commitment to play nice.
It also clearly shows that he has little integrity - which is one of the cards he keeps on playing.
The letter last week was clearly a PR stunt as I think he has suddenly realised that
1) court cases take a long time to get going
2) the media and people are going to get bored and forget about him
3) he can't go and get another contract until the court case as this would massively impact his claim for financial damages so his sporting career is over
The Michaela Banerji case (sacked for anonymous tweets which were tied back to her) occurred in 2013 and is now in the high court in 2019.