I don’t recall his having written on the topic. Most of his academic publications have been in the area of “global general relativity”, where one considers models encompassing all of spacetime (similar to the “block universe” of general relativity, where there are no dynamics).
The puzzle of electromagnetic radiation from a charged particle in a gravitational field, and the proposed solution (the two links in your comment were both to the arXiv paper, was the first supposed to be this Wikipedia article?) due to the radiation being hidden behind a RIndler horizon for the equally accelerating observer is reminiscent of Mike McCulloch’s model of quantised inertia, in which Unruh radiation is the source of inertia due to asymmetry of the Rindler horizon for an accelerated object. This was discussed in the post here on 2023-03-19, “An Alternative Theory of Inertia will Get Tested in Space”. Comment 5 of that post includes a twenty minute talk by Mike McCulloch on the theory and how it permits a propellantless space drive.