"Seems like a minor stylistic preference. Some have {{who}} determined that a blanket ban on any unsourced statements with weasel words, such as the following, will have far greater impact:"
Really though, I think the {{who}} in midsentence does help to illustrate exactly where the problem/weasel words are. Most of the time, "some argue", "others think" and the like with no sources or attribution are a thin cover for a personal editorial.