Media attention. American liberal media brings attention to the crimes of regimes like Saudi Arabia because a significant section of Democrat party politicians oppose Saudi Arabia. However all American politicians from both parties, Democrat and Republican are united in their support for the TNI (Indonesian military) and AFP (Philippine military) in committing human rights violations. You can see the difference when only Wahhabism is called out and not Indonesia's equally extreme Sufi Islamism. Media attention forced the west's hand in East Timor. What Indonesia does in West Papua is 100 times the scale of what Saudi Arabia does in Yemen.
British media like The Guardian and the Free West Papua campaign affiliated with Labour party are advocating for West Papua in the UK and bringing attention of what is happening to the British public. No such thing is happening in the US. It needs to happen in the US and so does attention on the Lumad killings. Portugal campaigned internationally for East Timor when the US supported Indonesia's invasion. Britain based Survival International advocates for West Papua and the Chittagong Hill Tracts. American based organizations like Human Rights Watch follow US establishment foreign policy and are deliberately soft and tempered in their criticism of the same events. Even Amnesty International which is an establishment organization in Britain is better than Human Rights Watch.
https://www.theguardian.com/world/west-papua
The
https://freewestpapua.org website is selling Free West Papua clothing and merchandise to raise money for their cause. They are holding protests in Britain against Indonesia, handing out pamphlets and holding hearings in Parliament for West Papua. Nothing is happening in America.