Speculative literally means conjectural, hypothetical, toying with an idea for its own sake, though. It's not a word I associate with product of any kind, more with a sketch than a prototype.

The screenshots tricked me.

To me there were a couple of giveaways.

1. “Art direction” is the second tab. There’s no technical components, no installation info, no GitHub.

2. Jason Yuan Design in the footer. So clearly some kind of UX person/group built this, not a hacker collective.

3. Flowery UX-heavy language and the absence of concrete features. Focusing on the “what” rather than the “how”.

I shouldn't need to be a detective to understand the point of a website lol, unless that is the point. It was completely non obvious to me as well.

Standard marketing copy does not have the word “speculative” in it because it’s not… speculation