The housing stock across this area was mostly built between 1976 and 2014, with the median home dating to about 1996. That puts a big share of original openers - and a second wave of replacement openers installed as those first units aged out - right in the range where gears strip, capacitors weaken, and circuit boards start misreading their own sensors. A 1990s-era chain drive that's never been serviced is a common find on a service call here, and it's usually the belt or gear kit that's failed, not the whole unit.
The climate band for this area is classified as moderate heat, and that's the other half of the story. Garages here run hot for a good stretch of the year, and that heat cycles opener electronics and lubricant on belts and chains harder than a cooler climate would. Grease dries out, gears run drier than they should, and circuit boards that sit above a hot car see more thermal stress over their life. None of this is dramatic - it's slow wear, which is why owners often don't notice until the opener quits outright rather than fails gradually.