Tell that to all the crew and aircraft found and saved (in some cases) in Canada's North, and elsewhere in NA ! If it had not been for the ELT signal being received for direction to its location, we'd still be looking for an appreciable amount of crashes with the loss of more life.
Signals now include GPS co-ordinates and that speeds up a search.
Unfortunately there are too many misuses of the ELT's causing false alarms and, possibly, delayed reactions.
It seems that some readers and writers on this forum never had their asses over unlandable terrain for a long time !!!