I can't find the video anywhere, if I recall correctly it was from around 2012-2016 and the female journalist just went to his house to catch him coming back from work and ask him if it was really him managing hundreds of millions and he was just acting uninterested as if it were completely normal.
Not sure he was a plumber, but he was in trades for sure
It would also make a lot of sense if he sued/paid them to delete the articles and videos about him