While you're correct about the scarce and sketchy evidence currently it is in the process of narrowing down. Or to put it better the evidence is mounting that it might be a breakthrough. It likely hard to manufacture correctly, but simulations done at Berkeley Labs seem to support the claims of the original paper
https://arxiv.org/abs/2307.16892
And aside from that to be honest I hope that we have time to prove or disprove those claims, before any major news outlet jumps onto the hype train and ruins it.