He managed to DMCA strike the corrected version of the paper: https://arxiv.org/abs/2308.04214
We then contacted Stanford, and somehow got their legal team to message Arxiv telling them that Matthew is a fraudster.
In spite (!!) of Arxiv removing his stolen version thanks to Stanford's email: https://arxiv.org/abs/2307.14810
They refused to lift the obviously spurious DMCA claim on mine.