I'm not saying that there are no non-physical things. I am saying that certain philosophers are making seemingly tendentious arguments for declaring that consciousness is not a physical phenomenon. Once they get around to saying with sufficient specificity what they have in mind, then we will be able to see whether those claims are justified.

If you imagine an Apple, is that Apple physically on some plane of existence?

If so, then consciousness is physical, if not, then it is non-physical.

What, exactly, does 'plane of existence' mean?