The live adenovirus (engineered to express a rabies protein) is not entirely safe. It won't give you rabies, but it does infect you. For wild animals, it's ok if some small fraction die from it.

They should spread some of these around my town in central NY; we've had rabid animals recently (cat and fox).

The pellets can cause localized infections or rashes to humans. More dangerous to certain groups like small children, pregnant women and people with immune system issues.

The Vampire Bat Link (1911): The very first connection between bats and rabies was made by scientist Antonio Carini in Brazil. He discovered the virus in cattle that had died from a paralyzing sickness after being bitten by vampire bats.

The First Confirmed Bat (1921): Researchers Haupt and Rehaag officially confirmed rabies in a bat captured by a farmer. The farmer witnessed the bat biting a calf.

The United States Discovery (1953): Rabies virus infection in insect-eating (insectivorous) bats was first recognized in the United States in 1953.

You make a good point but your year is off. For the purposes of the article though it should have been more evident. Other animals tend to get it from bats because bats are the primary carriers. They didn't understand that back then but we do now and it's worth talking about.

But dogs typically get it from the bat. I don't understand the logic