This is a good point; it seems to me that the unfalsifiability of the HPC is either deliberately built-in to the whole concept or deliberately ignored by proponents of the idea. I think this is where philosophy demonstrates its uselessness in trying to determine actual answers to reality as we comprehend it; this is the purview of science.
Well, naturally. When you always ask vague and sometimes malformed questions, it's easy to dismiss when people attempt to answer them. It's nothing more than appearing like you're interested in determining facts about reality but would rather keep your beliefs protected and intact.
Wondering how brains produce conscious experience is a "malformed question"? Is that really your claim?