Anecdotes aside, steak won't spike your insulin.
Not to mention that people don't tend to eat the leanest cut available so all of those T-Bones and Rib-Eye's add a huge chunk of saturated fat into the mix and that's without all the addons like that nice sour cream and peppercorn sauce with those nice roasted potatos....
Consuming large portions of meat will increase your BG level's they won't spike as fast as if you would chuck down a bowl of ice cream but they'll rise quite well and crash just as quickly later...