Objects have EditorOnly tag wlii be discarded on bulid phase and not to be included into actual game scene, so there is no reason to block mobile avatar build when EditorOnly objects have unsupported shaders or components.

If there were no hard blocking like this, we could make closs-platform avatar in the same root object, i.e. equip rich light particle sabar only for PC, and more simpler one for Moblie.