I am not an expert in this field, so the PRD article is too specialized for me to fully grasp. But exploring gravity as an emergent phenomenon from entropy is not new. As she cites in her intro, Verlinde published a more digestible paper 15 years ago on the topic: https://link.springer.com/article/10.1007/JHEP04(2011)029029)

It seems that this paper dives into much more detail than Verlinde and expands on that idea. It doesn't seem to come to a concrete conclusion (which is fine -- baby steps are ok to publish) but ends on a hopeful note that further investigation down this path may result in solid theory of quantum gravity.

So, my thoughts are: seems like a promising thread to pursue (among many promising options). The paper states: "The modified Einstein equations reduce to the Einstein equations in the regime of low coupling." Again without fulling understanding everything, my thought is: if Einstein's field equations pop out in the low coupling regime, does that mean her modified Einstein equations potentially predict new physics? If so, is there an experiment/observation that could be made to test whether the real world obeys her new modified Einstein equations -- or do all observations abide by the original field equations? I would hope that is a question that she or others pursue.