I think you've misread the scene. Data is trying to replicate his emotional state. At the beginning of the scene the holodeck safeties are on. He asks the computer to make the Borg stronger and it refuses for safety reasons, presumably on the grounds that making the drone super-strong could result in severe injury.
Data asks Geordi to help him reset the strength calibration. Geordi demurs as that would require turning off the safeties.
Data points out that with the safeties in place (as they are now), the simulation is pointless. He wants the safeties off, please.
DATA: (to com) Computer, reset simulation to time index two point one. Increase Borg strength by thirty percent.
COMPUTER VOICE: Unable to comply. A thirty percent increase would exceed safety limits.
Data thinks about this for a moment, then turns to Geordi.
DATA: The computer will require the voice authorizations of two senior officers in order to disable the safety routine. Will you help
GEORDI: (concerned) Whoa, wait a minute. (re: Borg)
That thing could kill you.
DATA: During the original incident the Borg presented a genuine danger to my life. With the Holodeck safety routine in place, I know
that my life is not in danger. Since I am trying to duplicate the
conditions of the original incident as closely as possible I must
attempt to duplicate the jeopardy as well.
TNG: Decent - Original Screenplay