Infinite Scroll Infinitely Spinning Animation GIF
I asked the seller about this exact thing and got a very rude response from the seller telling me that I don't know what I am talking about because I am comparing apples and oranges. It appears that the infinite scroll DOES lock up after a certain listing count is reached (somewhere above 772 and 990). This was exactly what I was concerned about happening which provoked the response.
See how the animated GIF locks up here: (900+ listings)
But it does not lock up here: (102 Listings)
Also, when the animated wheel locks up, the numbers appear again from the old vantage pages. When the page numbers are clicked, it generates a 404 page. But I guess I don't know what I am talking about.