Yeah definitely! Depending on how the site uses the chat bubble it can be annoying to the user if it blocks the site or randomly pops up. I think the author did a good job of getting a good number of samples and write up.

One thing that makes this a bit harder to compare is that the chat widget is at the bottom of the page where as the Live Chat & Support link was up top right. Which catches the user's eye much more so might not make this as an accurate of an A/B test as it could have been