I think he cleans up on the revenues from YouTube, and the cars are just an expense.
I somehow got caught up watching a guy on YouTube from Oklahoma called Auto Auction rebuilds (AAR) where he goes to Copart regularly and looks at cars and ends up buying some. He was fixing them up and flipping them, but got in trouble for not having a dealers license. He was able to get a wholesale dealers license to stay out of trouble but that limits his selling opportunities.
Now he turns around and resells the cars through IAA, and more often than not he loses money on them. But he goes over the numbers showing how even after losing money flipping the cars, he comes out ahead after factoring in the YouTube revenue from the episodes he put out featuring the car.
Hoovies Garage has a lot more viewers and subscribers than AAR so in the end I doubt he’ll lose from buying the Superbird regardless of how sketchy it is.