The article mentions: > It compiles fine now but the final API is defected: ideally, we do not want a user to wrap each handler with Box::pin. Why not, whats

The article mentions: > It compiles fine now but the final API is defected: ideally, we do not want a user to wrap each handler with Box::pin. Why not, whats the problem (apart from some sort of philosophical idea of "beautiful api")?