I wouldn't have the slightest clue of Eds BF, but I bet here in the next 3-5 years we see a much smaller version of him.
At some point all truly huge men either downsize or they die.
Dave Tate had a prety solid representative series of articles when he had to make the shift from being "Big Dave Tate the Fat and Strong Powerlifter" to being "Ripped-but-reasonably-sized-and-Healthy Dave Tate the Amateur BodyBuilder." (Fine, his titles were a bit more pithy than mine.)
The Dave Tate Project - Part 1 | T Nation
https://www.t-nation.com/diet-fat-loss/dave-tate-project-2