In the grand scheme of things, he's just not that big of a deal
I think AMIII was one of the most visible of the GB. Ole Rubber Face is probably more recognizable because of his facial mannerisms. Maybe Herd as he is the only black GB. But after those considerations, I think Tony is most memorable. For one thing, he was a better speaker than the others. And you have to admit he made some shocking statements that made him memorable.
So, I think it's amazing there are no reports of him being sighted. There are, after all, PIMO "spies" everywhere! That's something WT cannot fix and it has got to bug the hell out of them! I suspect he is intentionally staying incognito.