It's because at one point
It's because at one point they damaged a review test loner from Subaru and after that Subaru has refused to work with them. They've been incredibly salty about it ever since.
I had to stop watching their channel when it became completely obvious that it's just a racket that gives positive coverage in exchange for kickbacks. Watching them try to downplay the Bronco to protect Jeep's image made that undeniably obvious.