The Guardian article linked in your OP is at least 12 years old.
What it describes is likely still operative.
An excerpt;
...
The euphemisms of counter-terrorism
When contemplating the euphemisms that have slipped into the lexicon since 9/11, the adjective Orwellian is difficult to avoid. But while such terms as extraordinary rendition, targeted killing and enhanced interrogation are universally known, and their true meanings – kidnap, assassination, torture – widely understood, the disposition matrix has not yet gained such traction.
Since the Obama administration largely shut down the CIA's rendition programme, choosing instead to dispose of its enemies in drone attacks, those individuals who are being nominated for killing have been discussed at a weekly counter-terrorism meeting at the White House situation room that has become known as
Terror Tuesday. Barack Obama, in the chair and wishing to be
seen as a restraining influence, agrees the final schedule of names. Once details of these meetings began to emerge it was not long before the media began talking of "kill lists". More double-speak was required, it seemed, and before long the term disposition matrix was born.
In truth, the matrix is more than a mere euphemism for a kill list, or even a capture-or-kill list. It is a sophisticated grid, mounted upon a database that is said to have been more than two years in the development, containing biographies of individuals believed to pose a threat to US interests, and their known or suspected locations, as well as a range of options for their disposal.
It is a grid, however, that both blurs and expands the boundaries that human rights law and the law of war place upon acts of abduction or targeted killing. There have been claims that people's names have been entered into it with little or no evidence. And it appears that it will be with us for many years to come.
The background to its creation was the growing realisation in Washington that the drone programme could be creating more enemies than it was destroying. In Pakistan, for example, where
the government estimates that more than 400 people have been killed in around 330 drone strikes since 9/11, the US has arguably outstripped even India as the most reviled foreign country. At one point, Admiral Mike Mullen, when chairman of the US joint chiefs of staff, was reported to be having furious rows over the issue with his opposite number in Pakistan, General Ashfaq Kayani.
The term entered the public domain following a briefing given to the Washington Post before last year's presidential election. "We had a disposition problem," one former counter-terrorism official involved in the development of the Matrix
told the Post. Expanding on the nature of that problem, a second administration official added that while "we're not going to end up in 10 years in a world of everybody holding hands and saying 'we love America'", there needed to be a recognition that "we can't possibly kill everyone who wants to harm us".
Drawing upon legal advice that has remained largely secret, senior officials at the
US Counter-Terrorism Center designed a grid that incorporated the existing kill lists of the CIA and the US military's special forces, but which also offered some new rules and restraints.
Some individuals whose names were entered into the matrix, and who were roaming around Somalia or Yemen, would continue to face drone attack when their whereabouts become known. Others could be targeted and killed by special forces. In a
speech in May, Obama suggested that a special court could be given oversight of these targeted killings.
An unknown number would end up in the so-called black sites that the US
still quietly operates in east Africa, or in prisons run by US allies in the Middle East or Central Asia. But for others, who for political reasons could not be summarily dispatched or secretly imprisoned, there would be a secret grand jury investigation, followed in some cases by formal arrest and extradition, and in others by "rendition to justice": they would be grabbed, interrogated without being read their rights, then flown to the US and put on trial with a publicly funded defence lawyer.
Orwell once wrote about political language being "designed to make lies sound truthful and murder respectable".
As far as the White House is concerned, however, the term disposition matrix describes a continually evolving blueprint not for murder, but for a defence against a threat that continues to change shape and seek out new havens.
...
The disposition matrix is a complex grid of suspected terrorists to be traced then targeted in drone strikes or captured and interrogated. And the British government appears to be colluding in it
www.theguardian.com
Quite likely the "matrix" is still operative.
That would be the question here I'm supposing.