The housing in this service area runs from 1938 to 2013, with the median build year landing at 1986, and most of what we're called out to sits in that 1980s-to-90s band. That matters for openers specifically because that's the generation of unit that came standard with steel drive gears, early circuit boards, and motors rated for a service life that's now mostly spent. These units weren't built to last forever - they were built to last about as long as they have.
Columbia sits in a moderate cold climate band, and that's the other half of the failure mode. Repeated cold snaps shrink and swell the plastic housing around opener logic boards and strain the lubricant in older gear assemblies. A gear that's been grinding quietly for two winters finally strips on the third. It's not dramatic - it's wear that the climate accelerates on hardware that was already due. New construction with modern belt-drive openers doesn't see this nearly as often; it's the 80s-and-90s stock that keeps us busy.