Burleigh Waters is dominated by detached family homes with double-width sectional doors, and those doors are heavy. A wide door works its counterbalance harder than a single door doing the same number of cycles, so the springs here reach the end of their life on a predictable schedule.
What makes this suburb unusual is how consistent the warning is. Weeks or months before a break, the door starts to feel heavier by hand and stops holding still at waist height when disconnected from the opener. That is balance drift, and it is the counterbalance telling you it is tiring. Most households never test for it, which is why the failure feels like it came from nowhere.