What is it with USB drives that bothers you people so much? It's just storage. Apps could also come from a cloud drive, which would be no more dangerous.
All I hear is "ewww, physical media!"
All I hear is "ewww, physical media!"
Security-wise, copying executables b/w systems amplifies the risk of escalating partial write access on one system to full system access on many other systems. This would be an easy building block for "Advanced Persistent Threat"[1] attacks.
[1]: https://en.wikipedia.org/wiki/Advanced_persistent_threat