For example: how high does that oh so important asymptote on voltage go? - it must be known, from the design of the CC source.
The maximum voltage is 100 V, but you don't find this value in the "Simplicity paper", unless you assume that it coincides with the maximum of the voltage scale on the left of Figs.6A-D.
Instead, this value was explicitly indicated in the "Heat After Death" paper, presented at ICCF4 the subsequent year (1): "We have then adopted the procedure of allowing the cells to boil to dryness. For these conditions the galvanostats are driven to the rail voltage (100 V) but the cell current is reduced to zero."
Anyway, it seems to me that you did one more time fall in the trap of the never ending straw man arguments. You are wasting your time. Let me suggest you to first finish the examination of the excess heat claim (a) of the simplicity paper. I fear you probably have not well understood the foam issue and its impact on the energy balance of the "1992 boil-off experiment".