Nope i have a roughly 100 year old Victorian with original windows and wood siding. It does have blown in cellulose in the walls and allot of insulation in the attic. I also lined the basement walls with foam insulation and that helped allot but it is still very far from well insulated. And insulation has nothing to do with burn times regardless. All it does effect the needed heat output.
I was in a round about way agreeing with you.