its seems you are kicking someone on the way out while they were on the way out saying 'I'm on the way out', or at the very least 'I see my evidence halted but wasn't refuted, I am on pause'. There were others who were interested, no harm, though he does turn the speculation up to 11 when a solid 8 would be ok…
Yes, I think it is not close enough to be for the red falls, but maybe. This affirms the possibility because obviously 'active volcanos fairly close to the area' is better than the alternative.
At the same time cuts slightly against the thesis as it increases probability of the blood falls being from glacial melt. If that volcano has truly been 'continuously erupting' (I doubt this) then glacial melt might create the red water.
net positive effect of the information on the thesis
Highly Speculative: { I have also wondered about geological effects from the processes that made Earth become more oblate. Antarctica has 'contained' the south pole rotational axis for a fairly long time, a few hundred million years at least. If the Earth has become more oblate as it has rotated, how does the net redistribution of material effect the poles? Perhaps the seeming image of very large openings are indeed volcanos in some sense, though it might be better to think of them as 'crustal voids from retreated mantle.' Perhaps the 'antarctic slab' is locked into a curvature of an older Earth's pole. There are gigantic magma chambers and tunnels that meander deep into the continent. There is probably lava at the lowest points in some of these evacuated chambers and tubes. Perhaps there are additional geologic effects due to differences between how fluid mantle transmits momentum (it can have curl, it is a fluid) and the crust transmits momentum. The mantle is in constant motion relative to the crust in places.
There might be other areas that have similar chambers and 'catacombs' due to other areas being the pole for a very long time. Maybe somebody can find a geological map showing where the south pole has been in terms of 'old surface that hasn't subducted.' I tried but have yet to find. I might go to a nearby academic library. } Highly Speculative