I don’t agree with this view because I think that this view seems to mix consciousness and agency into the one mysterious thing: “participator”.
I think that consciousness and agency are distinguishable aspects of the world, and I think that agency/ activity/ participation can logically only occur when/ after an entity is conscious of the on-the-spot situation. Knowledge/ consciousness of the on-the-spot situation is a necessary aspect of the world, and agency/ activity/ participation is a separate thing that occurs in association with it.
Discern difference, distinguish, discriminate, identify, perceive what is currently true in oneself and one’s surroundings, know what is time-place on-the-spot point-of-view true. That is what knowledge/ consciousness does; that is the function of knowledge/ consciousness.
This is as necessary for particles in their low-level mathematical environment as for people, and other living things, in their more complicated high-level environment. Truth must be discerned; there is no Platonic realm external to the universe taking care of capital-T Truth: this is the job of consciousness.
When it comes to the low-level mathematics of the world, low-level consciousness is necessary to discern difference, distinguish, discriminate, identify, perceive what is currently true, know what is time-place on-the-spot point-of-view true when it comes to the low-level categories, numbers and relationships that exist in the world.
For higher-level living things on the other hand, higher-level knowledge is clearly a bit of an active construction. When it comes to living things being able to sense what is true about the surrounding world, all “true” information initially comes in the form of low-level categories, numbers and relationships, and any higher-level knowledge/ consciousness/ information about the world is like a story that the organism must construct out of this basic low-level information.
But agency/ activity/ participation in the world is a different thing.