The video is incorrect and not evidence. Insulin and Glucagon are complementary hormones for the purpose of maintaining homeostasis.
Insulin is not anabolic and simply a storage hormone:
It’s also self evident that insulin isn’t anabolic because T1Ds only gain muscle if they work out and gain excess fat when they don’t. GH and IGF-1 are anabolic.
Just because the human liver has glucagon receptors; this doesn’t prove that glucagon increases ketone production directly.
Glucagon can be anabolic during fasting and especially when white adipose tissue is non existent. Glucagon -> Ghrelin -> Growth hormone -> IGF-1