Not your average family. No one is arguing that. The post that gave rise to this discussion was about configuring ppp, if I recall correctly, a perfectly appropriate query, for this list. Because there are many ways to accomplish this task, some text based and some GUI based. A query to, say, comp.os.linux.networking, would likely produce a GUI based answer, and a new blind user would likely be left to assume that was the only available or viable approach.
Text based approaches take more effort to explain and follow, and are less likely to be given.
For another example, on linux.redhat.misc the answer is likely to be to click on the net configuration icon on the control panel, and go from there. This is understandable. Sometimes cultural differences are hard to see. A bit of tolerance would go a long ways. This is one of the reasons for the existence of this group.