No. Diablo 2 (2000) or LoD (2001) do not give discounts on D2R. Blizzard is not discontinuing either of the old ones so people can still play what they bought.*
*Exception is Mac. Diablo 2 can no longer be played on newer Macs
D2R and several other Blizzard games don’t have Mac support listed at all. So there is no news, and you should not get your hopes up any time soon.
Note: MVPs are other players, not Blizzard staff. MVPs do not represent Blizzard or speak for Blizzard.