Most of the housing in this service area went up between 1956 and 1979, median right around 1970, spread across six named areas that all built out in roughly the same window. That means a huge share of the openers we're called out to are either original chain-drive units from that era or first-generation replacements installed sometime in the 80s or 90s - both are well past the point where parts are easy to find.
The cold is the other half of it. This is a severe cold-climate zone, and openers take that on in specific ways: circuit boards that were fine in summer start throwing errors once temperatures drop, capacitors weaken faster in unheated garages, and logic boards in older units aren't built for the swing between a warm afternoon and a night well below freezing. We see the call volume climb every winter for exactly this reason - it's not random, it's the housing age and the climate working together on the same weak point.
A newer opener in an attached, insulated garage rides this out fine. An original 1970s unit in a detached garage with no heat source is the one that fails first, every year, right on schedule.