This sort of thing is sufficient for me

But not for me. Indeed. I am pretty sure none of those articles is even intended as a solution to the HP. And if they are, why not publish them is a journal and become famous?

How an Algorithm Feels From Inside.

Intended as a solution to FW.

Stimulating the Visual Cortex Makes the Blind See

So? Every living qualiaphile accepts some sort of relationship between brain states and qualia.

if, say, the perception of the hard problem was causally unrelated to the actual existence of a hard problem (for epiphenominalism, this is literally what is going on),

So? I said nothing about epiphenomenalism