Back in the XVII/XIX century, a similar problem existed regarding life - the problem of "what makes living things tick". The assumption at that time was that while we can understand the biological processes around life, we will never understand the so-called "vital force", which causes things to live - life itself. I know it sounds weird now, but back in the day the mental models were different. Phenomenas like "water boils" and "organisms self-replicate" were treated as completely different domains of reality, without an overarching uniform scientific model.
It turned out that after around 100 years, we can figure out the chemical/physical processes and the need for the term "vital force" became redundant.
While this is certainly not an argument proving that the Hard Problem is not in fact hard, it is an interesting idea to think about. Perhaps its all a matter of developing better, higher-resolution neurological models which will at some point give us the tools to decompose qualia.