My personal opinion is that Tolmie doesn't currently have any real knowledge of the inside workings of City at all, and he drops hints for apparently no reason other than he likes winding people up. I think that he moved to X because he thought it would get him more attention than he was getting here, and he moved back here because the people on X were far far quicker to catch on to him than he expected.
To be clear, that's purely my opinion of his footballing knowledge. It is pretty much undeniable that he is a very decent person in real life and has dedicated a huge amount of his life to helping children from challenging circumstances - if I was not in exactly the same boat, having worked with young people for my entire adult life, I probably wouldn't bother calling him out whatsoever.
But some people will say he's just doing it for fun and isn't claiming to be a real source of knowledge, and some people will say he does it out of the goodness of his heart and it's not his fault that he's usually incorrect. By definition, that means defences are split.