[P0943](http://wg21.link/p0943) was accepted into C++23. One of the national body comments for C++26 proposed its removal. SG1 voted without objection to retain it. LEWG almost obtained consensus to remove it. This is an attempt to outline the issues, as mostly exposed in the LEWG discussion, a later reflector discussion (“stdatomic.h in C++”, starting March 27, 2026), and some [discussion on a](https://github.com/llvm/llvm-project/pull/143036) [github implementation CL](https://github.com/llvm/llvm-project/pull/143036). This summarizes points we think should be kept in mind. ***We do not propose any normative change to the standard.*** However, we are confident that this issue will recur, and should at least be documented. We also expect some of our claims here to remain controversial.