Some jumbled thoughts from a lay-person:

1. We clearly don't have a consensus definition of consciousness. But its not clear to me that we even have rough, working definitions that are better than just comparisons back to subjective human mental experience. Until we can get past that then people will still invoke human exceptionalism.

2. Until we stop thinking of consciousness as a single continuum, we're not going to be able to talk clearly about different dimensions of consciousness, or consciousness that in some ways exceeds that of humans.

3. We need to take ourselves out of the picture. Because its possible that consciousness is no more than a mental illusion.

4. Imo our tendency to kill and eat other animals might well be a block on our collective ability to fully recognise and confront non-human consciousness, and therefore to see consciousness for what it is.