Yeah, I noticed the same thing — the original SweetFX 2.0 standalone links are pretty much gone, and most of what’s floating around now are the older 1.5 builds. What people are usually showing in those screenshots is actually the Reshade framework with the SweetFX shader pack integrated. Reshade basically absorbed SweetFX, so 2.0 never really stayed as its own thing.
If you want that “SweetFX 2.0 look,” the way to go now is just to grab the latest Reshade and then enable the SweetFX shaders from within it. It takes a little setup, but it’s the modern replacement.