I think it's likely an organic move which happened despite all of the forces you mention, due to massively changing public sentiment informed by alternate sources outside of their control. I think if the media was able to keep pro-Palestine sentiment low, we wouldn't be seeing any of this flip. Basically they have no choice but to flip or lose even more of their power to propagandize. Which I guess could have come down from the top, but such a directive still probably happened because of what I mentioned.