I used that word because they aren’t actually sectors, but it’s immaterial if it is a cell or the enclosing sector. They can be overwritten as a full block of course.

Whether this actually resets the voltages might vary by drive, who knows—would need to see hard data to properly verify. Without that data, both Gibson and critics are talking out their asses.

Gibson is a known quantity and more reliable than internet nobodies however. It sounds feasible and I (so far) have no tangible reason to disbelieve him. If you want to prove him wrong, do the work.