To entertain the idea of subjective reality does not mean the illusion of the separate ego view is not going to be experienced.
I'm suggesting that you can have both, that they are not mutually exclusive but more like a duality. Many spiritual writings address that we feel separate from the one of everything and suffer because of this. Isn't that the fall from Eden? The Buddhist's illusion of an existing separate self? But while we are running around perceiving with our ego and carry on about things outside of ourselves as separate from us, we are also one with everything completly and so much so that we really can't completly comprehend that in our limited minds.
I get upset by the extreme case of LoA, that someone with cancer is doing something wrong to be that way. I had an Aunt that died of lung cancer and didn't smoke and was very giving in her ways, voluteer type, and had strong Jesus faith. I haven't talked in depth with my brother about her, but he said her faith was stronger even more by going through that. It's a curious thing and I'm out of my element to see her point of view, since I don't have that specific Christ feeling. Although there's the saying "God works in mysterious ways". And at some level I can stretch the idea that there's way too much that influences how our lives go that we can't perceive or understand, so attracting something or having an experience becomes manifest based on a spectrum that we only feel a small band of normally. So I get to the thought that IM/LoA ideas get me more aligned with the whole of the spectrum, to realize I'm really the one with all that is - instead of a separate ego with worldly desires.
When I start thinking about subjective and objective reality models I also find fate versus freewill in the mix. Where we have an illusion of being separate, we feel we have lots of freewill to operate in. Then if I shift to being one with all that is, it's more of a determined/fated view since it just is and is without time so doesn't have room for freewill or choices? Like, is it ultimately that "being one with all that is", just exists and has no certain way to our illusion of the ego and doesn't really have any choices by it's nature of just existing? Thoughts in progess there and maybe off topic by bringing in fate/freewill stuff.