Is there an attribution obligation for arXiv preprints with the standard license? I'm currently learning more about arXiv's different licenses. One of them is arXiv's own perpetual, non-exclusive license. Unlike the CC licenses, it does not seem to include any clauses on attribution to the author.
Are scholars under the obligation to cite or attribute to the author of an arXiv preprint when it is under the “standard” arXiv.org non-exclusive license to distribute?
If you use someone else's work, academic honesty requires you to cite that work.  Licenses and copyright are completely irrelevant.
If you redistribute someone else's work, then the license is important.  That is a matter of law, not academic honesty.  The ArXiv license does not permit you to redistribute work unless you are ArXiv; attribution is irrelevant.  The ArXiv license also does not authorize modification, so ArXiv cannot change the author names in a paper.