I'm pretty sure there is no subsurface scattering in frosted glass. Indeed frosted glass is just regular glass with a frosted surface. Below the surface, it's just pure glass, which does not scatter light.
That being said my example is not acrylic… and it’s not quite glass either as you mention. It’s more like glass with some artistic license.
Not that this matters much anyway, the effect is cool nonetheless, albeit a little bit improperly named.
Light inside the frosted glass just goes in a straight direction. It will not behave like this : https://blendamator.com/wp-content/uploads/2023/09/schema-ra...