No according to page 41 of the 2024 BiaB for Mac user manual.
Clicking on a slot opens the Plugins dialog, which allows you to select a VST/AU synthesizer and/or audio effects.
Unfortunately, the 2024 Mac user manual does not list any PG Music plugins.
My guess is there is an expectation Mac users will use the effect packages included with GarageBand, Logic Pro, Cubase or other DAW products that work on Mac operating systems.
Information you may not know. DX, also called Direct X, is a component of a Microsoft operating system specification. Knowing that, it kind of makes sense that the plugins are not available on a Mac. The Mac only equivalent is the Audio Unit or AU for short.