The mismatch shows up most on doors that got a replacement opener without a matching door inspection. A 1962 door frame was sized for the hardware of its decade - lighter panels, narrower tracks - and when a heavier insulated door gets dropped in later without upgrading the opener's lift capacity, the drive gear takes the strain meant for springs. We see stripped gears and burnt-out circuit boards on these setups more than on newer builds.
The other common trap: homeowners replace the opener but not the travel limit switches, so the new unit still thinks it's lifting the old door's weight. It runs, but it runs wrong - stopping short, slamming down, or grinding on the way up. On a household budget like the $83,030 median here, people understandably want to swap just the broken part. Sometimes that's fine. Sometimes it means paying twice.