Isn't there a quality control issue for replacement points now??? I seem to remember reading that somewhere. So that's a strike against point reliability, careful of your supplier. With points or anything mechanical or electronic failures happen.
Let's put the comparison in perspective here---Sure there are reports of electronic ignitions failing. But dang how old are the bikes now?? 20-30 plus years??? How many sets of points have been changed on a BMW with 100,000 miles??? How many bean cans have been replaced in the same 100,000 miles???
I for one will not replace a perfectly operating electronic ignition bean, in anticipation of it going out. Yes it will eventually fail but that could be tomorrow or two or three owners later....just like a set of points.