I agree smoke detectors of various types are generally less reliable, but we had very few reports of false alarms (but I am going back to the early 80's when fewer devices were fitted)
I'd be interested to know what the general reliability is now.
I seem to recall that the FAA mad a presentation at the ISASI meeting in Wash DC some two years ago that showed the data of >90% false alarms with 50/50 response by the pilot to evacuate.
Indeeed a very scary statistic, to those of us as pax that consider any evacuation as scary as death itself.