Meanwhile on the serverside, there have only been two versions of state resolution; the original beta version that turned out to be buggy, and the current fixed one which has been heavily scrutinized and is okay: https://matrix.org/blog/2020/06/16/matrix-decomposition-an-i....

The amount of incorrect info in the GP post is very unfortunate - although I too wish that open standard comms protocols spent more time collaborating than spitting at each other.