Well, regarding being on desktop:
the “Go Back” link is near the top of the page. The downside is that I have to scroll up from a long thread just to click on that. Since this is disadvantageous, most desktop users would rather just click on the back arrow button on top of their browser. The logic seems to leave me: why have that link that states “Go Back” in near the top of the page? Seems misplaced, especially if it doesn’t exist for mobile users.