When you consider air freight is worth ~$10/kg for cross-ocean flights, the decision to not remove 10kg of unused servo is worth about $700,000 per plane across the ~20 year expected lifespan of the plane.

And they probably do this on all their planes too, so perhaps multiply that by their ~200 plane fleet size giving a loss to the shareholders of $140,000,000.

That ought to be hard to justify at the shareholder meeting.

If you read the context given in the report, it mentions that this is done to change the plane's ILS rating from Cat-IIIB to Cat-IIIA. While I have absolutely no clue what operational/financial reason there might be to do this, I would guess they want to reenable the servo at some later point.

(The plane might also just not be certified to operate without that servo; as shown by this incident the servo still has some impact even when it's disabled.)