Just make it a choice whether you want the first post or the first unread, or make that dot bigger (as it was on GAF) if that's possible.Clicking the tiny people icon is a pain even on desktop, and it's even worse in mobile. I love the fact that clicking the title goes to unread.
I'd argue the user experience will get worse on average if it is removed. A solution could be to add a 1 link for each thread which goes to the first page from the index.