I'm not a scientist or doctor, but here's my critical take.
Rabbits, not humans
Needs human study to be meaningful
"HFD feeding induced marked metabolic disorders including increased plasma levels of free fatty acids"
This is almost certainly not what happens in humans. There is, however, a correlation in humans that eat excess carbohydrates and high triglyceride levels.
"To examine whether these disorders affected the development of atherosclerosis, two HFD groups were further fed with a diet containing 0.3% cholesterol for another 18 weeks. We found that 10%-HFD group showed a prominent accumulation of adipose tissue and developed 2-fold greater aortic atherosclerosis than 3%-HFD group."
AFAIK, rabbits are not omnivores or carnivores, only herbivores. Cholesterol is a sterol solely created by animals, and only found in food from animals. I'm surprised being fed cholesterol didn't screw up the rabbits even more than it did.
If there is some correlation to human diet, I'd want to take a critical look at what the rest of the "standard chow" they were fed was made of.
What a waste of food - we should be eating rabbits, not running diet experiments on them. ;-)