Those people who want to grill will eventually realize that their bug-squash doesn't taste as good as real meat and will be dissatisfied. The reason so many are content right now is because of creature comforts like the internet. Once these things are gone, people will have no reason not to start chimping out. Everyone has a breaking point.
There will eventually be some kind of nationwide conflict. Whether it will be in a few months, four years, ten, twenty, etc. Doesn't matter. It will happen, but the sooner it does, the better the chances we'll succeed and be able to rebuild.