Just wait until somebody dies on a doggy flight because of an allergic reaction...
You’ve always been able to travel with pets in the cabin on US carriers as long as the crate will fit under the seat. I haven’t heard of anyone dying, or even complaining, yet.
My thoughts exactly. For the life of me I cannot understand why people don't board their pets while travelling or don't travel if you cannot stay away from furry critters for a few days.