It seems to be using the bibtex tags for the inline citations. They don't stand out clearly enough for my liking, and they also have me worried: have I ever used a tag for someones paper like "XXXnonsense" or "dumbassYYY"?? Knowing myself, well....
The references come inline and not well separated from the text (eg in square brackets) like this:
Recently the world was introduced to PYTHEUS Ruiz-Gonzalez et al. (2022); Arlt, Ruiz-Gonzalez, and Krenn (2022). Like his homophonic namesake, PYTHEUS is an explorer, who in just a few short years has already made new scientific discoveriesArlt, Ruiz-Gonzalez, and Krenn (2022)!
I suspect this is related to me using bibtex poorly in the original or something!
Print-width PDFs can be a pain on mobile in cases when there is no working word-wrapped view.
I frequently would like to follow PDF links on mobile and the example looks good.