Production builders working through the early 2000s spec'd doors and openers to a budget, not to a fifty-year service life. Lighter-gauge steel panels, single-spring torsion setups sized to the minimum, and openers with plastic drive gears were standard in that era across the region. None of that is unique to one house - it's what came with the build year.
Layer on the climate band this part of Delaware sits in, which federal data classifies as cold-severe. Steel spring wire loses flexibility in sustained cold, and a spring already near its cycle limit is the one that snaps on a 20-degree morning, not a mild one. If your house here went up anywhere near 2004, the spring and opener in your garage are old enough to be in that failure window, and the cold makes the timing worse, not the cause.