Only someone who began using a website at the HomePage would ask this, right? And since this was a test user, they did not arrive from a search engine or a PPC ad with a real purpose in mind - although it's highly valuable testing is still a bit of an abstracted situation. So I'm not sure this is really a problem for real world visitors.
However, people who are helping to develop a website often think of the information in print terms, where there really is a "first page" and a linear flow of information "down" from there. As we all know, this is not the way the web really works.
When in doubt on any situation like this, I test. So far, I've never seen the lack of a text link for HOME hurt website conversions. And of course, if find you do need the link, there are many other possibilities in addition to only linking the logo.
Sometimes I make home page the LAST link on the menu. That way the visitor's eye gets to take in the story of the website first. And as the last menu element, it can even be ssparated by extra space , or style, etc, so it doesn't look like one of the "equal" choices but it can still be found by those who want it.