Yes, when I went to school, kids were taught in junior high to THINK and to digest what they read, and then write in their own words the overall facts about the issue they were writing about. That much verbatim copying is just sloppiness as a nonfiction writer, and inexcusable if it isn't introduced with indications of the source.

Moreover, anyone who has looked at advice on proper citation form since the mid-1990s knows that it's standard in many citation rules to include the download date (file access date) when the author saw the online source in the citation. That is precisely because online documents are particularly likely to change over time.

http://www.chicagomanualofstyle.org/tools_citationguide.html