This offseason he had ONE, I repeat ONE option to do what you want him to do - trade for Metcalf. And we have no idea if that trade was even on the table for the Bills. Maybe he didn't want to go to Buffalo. We don't know. And it would still require crazy contract.
Or tell me what other options Beane had. I am not saying it was completely impossible to do something, but it's not like Beane had a ton of options and decided to ignore them.