> Otherwise these numbers only take a bit of dedicated work to achieve

I think you may be underselling that a bit. I got to something like 370-80lb DL while weighing 185 some years ago, and it took nearly 3 years of dedicated work, eating tons of boring chicken, and a lot of lifestyle changes. It was pretty hard work and a of hours in total. I still lift weights, but don't have the focus and dedication to maintain that kind of lifting routine. Even at my max I was probably only edging into the "advanced" category.