DirecTV can choose to discontinue distants at any time to any customer that they want. There is no requirement that distants be offered to anyone, and it appears that DirecTV is taking that option by giving people the choices they have offered. People with both distants and locals pre-SHVERA should be able to keep both as part of the new grandfathering. But DirecTV has chosen not to offer that grandfathering.
This link however, is interesting...