There are a few layers here (hah, no pun intended).

The technique is considered "lost" because, well, there are no records of it. That doesn't mean we can't recreate it, make something look exactly like it, have the same functionality, etc.

The other thing, though, is that Damascus steel was made by folding different types of steel.

The knife you linked to was not. It's pattern-welded. This still uses different types of steel, but uses welding rather than folding. That's why it has that distinct, well, pattern.

Here is a link to a folded steel knife -- you can tell the pattern is very different.

As an added bonus, I have some Shun knives and they're fantastic. Knives like these require some extra maintenance (no dishwashing, and no leaving them wet at all) -- but they can last for decades or even centuries. And if you're going to buy good knife, you may as well spend a bit extra (or, well, two-three times extra) and get one from a reputable brand that stands behind their products. Shun will sharpen your knife for free once a year, for example.