No. Knockout 2 v10387 was a designed for the legacy Photoshop plugin API (8bf format). Adobe dropped 32-bit plugin support in Photoshop CC 2018 (and even earlier on macOS Catalina+). To use Knockout 2 today, you would need:

He clicked the third link. A thread on a defunct graphic design board. A user named PixelWizard99 had posted a direct download.