Carnivores are insulin sensitive not resistant. Your body when optimally fed (fatty ruminant meat) produces the correct hormones in the correct amount - of which insulin is one. 

Humans do not need to add a harmful, species inappropriate food to spike insulin, it’s just produced in the correct amount if you’re eating right. 

Humans are not adapted to tolerate exogenous daily insulin spikes. It’s not necessary or beneficial to do this.