[jamseason]

This article contains various unfounded statements.

The manuscript that it refers to does not contain any calculations concerning superconducivity of the material, so it cannot say anything about it aside from vague guesses. There are no manuscripts I know on arXiv that contain calculations that suggest the material "should" be superconducting. This paper and several other discuss flat bands, but as noted in https://arxiv.org/abs/2308.05143 and elsewhere flat bands are no reason to expect superconductivity, especially the kinds that this material supports.

So there is no theoretical support for this material to be in any way good for superconductivity.

There is also no good experimental support. The crystal structure suggested in the original papers has been reproduced, but is found to be an insulator. Reproduction attempts of superconducting features have universally failed, and alternative explanations for the original measurements (which are fairly sloppy) exist. So there's not much reason to believe there ever was anything interesting there.