The LOSC comprises a variety of areas concerning the seas in general which may present the problem of rendering it insufficient in the provision of certain aspects
concerning artificial islands. Moreover, over recent years, a number of significant
technological innovations have reached fruition, and the LOSC is generally regarded
as being inadequate in the light of these innovations which did not exist at the time of
formulation of this Convention...
...Traditionally, discussions on artificial islands only seemed relevant in relation to the
limitation of the extension of state sovereignty over the seas. While this issue has been
settled by the LOSC, the legal status of artificial islands has remained ambiguous. ...
...Since artificial islands have been expressly ruled out from
the definition of natural islands in the LOSC, their status is one which is neither a
ship nor as an island in international law...
https://www.blue21.nl/wp-content/uploads/2015/10/Artificial-Islands-in-The-Law-of-the-Sea.pdf
Typically, the conflicting territorial and jurisdictional disputes, maritime claims, economic claims and freedom of navigation claims are hopelessly conflated. The law concerning artificial islands is unsettled to say the least. The notion that the law of the sea will be frozen forever in time at 1982 seems to be the position of the western alliance.
What about the naval shorthand OBE (overtaken by events)? Does the US feel that it is somehow going to force the Chinese off these artificial islands? Just what does "within 12 nautical miles" mean? Is there no limit at all? What about safety concerns? Do US maritime patrol aircraft fly directly over a Chinese airfield built on an artificial island? When is a common sense effort going to be made to defuse the potential for military conflict over this issue?
The idea that this is not a political issue is nonsense.