Jagex made a huge move of making the amulet to be a standalone bis slot item, to then only backtrack to appease the loudest, yet the minority of the community.
100 to 0 real quick.
This decision in particular was largely driven by the survey data to try and cut through some of the 'vocal minority' potential, distribution for the question around the Amulet's crafting requirement was significantly more negative-leaning than for any other question on there so we felt a change was warranted.