Guilty. It's not been necessary for our setup as long as the wood is dry. Though in defense, this was by blocking off the EBT1 which didn't work well in strong draft conditions on our stove. The EBT2 came a few years later and was a better solution and with it PE reduced the size of the boost air intake hole.Some non cat owners block off the unregulated primary air from the dog house inside the fire box. This may help reduce hotter stove top temps and give a longer more even heat output.
I also just go with 1/2 to 3/4 load fires in the evening before bed and house temp usually holds til next evening.