PCG avoid spawning over other meshes

Does anyone know how to avoid meshes spawning over other meshes in a PCG volume?
I’m basically looking for the equivalent of “spawn on static mesh” boolean in the good old procedural foliage spawner, but it doesn’t seem to exist.

Anyone?

I was told that it doesn’t exist.
It seems to achieve that I have to tag every single actor in the level first, or some other even worse thing.
Glad to see the engine is always evolving /s