Everett sits in a cold, moderate climate band, and that matters more to garage doors than people expect. Steel torsion springs lose a bit of tension in cold weather, and galvanized cable and hardware installed in the 1980s and 90s wasn't always finished to resist decades of damp Pacific Northwest winters. Rust forms on cable strands and spring coils from the inside out, where you can't see it until a strand snaps.
Houses built in that 1968-2000 window also tend to have original one-piece or early sectional doors on hardware that was standard at the time - side-mounted torsion units, single-spring setups on wider doors, and cable drums sized for a spec that's since changed. When a spring on one of these finally breaks, the replacement part often isn't a stock item anymore because the door width or spring wind doesn't match what's sold today. That's a direct result of when this part of the county was built out, not a general garage door problem.