As discussed on PPR before it is BAD PRACTICE to issue taxy and R/T instructions during the high speed part of the landing roll unless there is some sort of problem. Before or after, fine. Pilots are actually not still doing the crossword at 100kts on the runway.
I agree. I often get such calls when still airborne. Some ATCOs don't seem to understand that a helicopter is in the most critical stage of the final landing after LDP, even over a runway and should be allowed to operate "sterile cockpit" until clear of the runway (at least then I can have a spare hand to change frequency).