(puts on tin hat)
Music, at the end of the day, is a product.
Dylan has lived very well off his version of that product for many years.
He's astute enough to know that the zillion dollar sales are over and at 79 probably
does not fancy the work that touring involves.
He has children (several) and he's not getting any younger -
this large amount of money merely stops any arguments (& represents a lump sum royalty?)
The estate and it's survivors will benefit - what's not to like?
π