Accounting for qualia and starting from qualia are two entirely different things. Saying "X must have qualia" is unhelpful if we cannot determine whether or not a given thing has qualia.

We can tell that we have qualia, and our won consciousnessn is the ntarual starting point.

"Qualia" can be defined by giving examples: the way anchiovies taste, the way tomatos look, etc.

You are makiing heavy weather of the indefinability of some aspects of consciousness, but the flipside of that is that we all experience out won consciousness. It is not a mystery to us. So we can substitute "inner ostension" for abstract definition.

There doesn't appear to be anything inherently biological about what we are talking about when we are talking about consciousness.

OTOH, we don't have examples of non-biological consc.