I totally agree with your assessment of the wording. Money, to me at least, never equates to closed or open source. Fortunately, at least with stack overflow jobs, you can kind of self-assess this if they list tools like JIRA or Trello. You can also ask questions to see if they're actively using what they claim. If they aren't singing the praises of their toolsets and checked that answer off, you can generally assume they're lying.

If the test was updated for the web and native in a single set of data points, some companies would incorrectly score low because they focus on one or the other. I think it could use some kind of polish after 16 years but only to remove very narrow interpretations that derail discussions like this.