I know a number of ex professional sportsmen (all egg chasers who have played for Wales) and I've not ever heard any of them call current pro's shit or talk about them like he is about Ralls. Those who are currently coaching may question mindset or technique but never hear them call someone shit. I suspect it's an unwritten rule between pros.
It makes me think he's either a complete **** for pretending to be an ex pro. Or a complete **** of an ex pro.