The page weighs in at almost 9 megabytes. How is that efficient and fast to load? Lazy loading images would be a small and needed improvement - but of course it would require the horrible jaava skript to be used, which must be avoided at all costs.
That is not to say the page is well-designed or pretty - it is hideous. But lazy loading would make it strictly worse by adding js parse+eval latency on top of the loading time for the images.