Don't know whether it's a misprint or not. But stop for a moment and think about why we do readbacks - to see that the instruction has been received and correctly so.
When doing a 1/2 mile SRA it's probably fair to conclude that the pilot is receiving the transmissions if the aircraft responds to instructions. In the landing situation there is normally a need to ensure that the correct aircraft has received the landing clearance - in a 1/2 mile SRA there will be no other aircraft on frequency (at least, none in a position to cause problems by hearing the words "cleared to land"), the risks associated with incorrect readback are minimal because the aircraft will be number 1 and the runway will be 'his'. Lots of the safeguards applied normally are simply not required in this particular operation.
Finally, I suspect issues like the above or, say, any claims that a permanent tx by the controller stops the pilot declaring an emergency or somesuch will be addressed by considering the exposure to the hazard in question.