Of course there was the now notorious incident in the Grand Canyon where irresponsible activation of a PLB launched three helicopter sorties that were completely unnecessary. I don't believe that was a unique incident of frivolous PLB activation.

Flying in a helicopter in the Grand Canyon meets my definition of "substantially increased risk," which, incidentally, is not characteristic of the typical SAR mission.

PLBs cut both ways, in my opinion.

However, I agree with your overall point which is quite an admission from a luddite like me, growling at the rear of my cave. One reason is that I got along for many decades without a PLB, depending upon good fortune and finally, a bit of expertise. However, a good, light, and cheap PLB does seem like a rational purchase. I am intrigued by the new offering from ACR.