Paleo data cannot inform us *directly* about how the climate sensitivity
(as climate sensitivity is defined).  Note the stressed word.  The whole
point here is that the text cannot afford to make statements that are
manifestly incorrect.  This is *not* mere pedantry.  If you can tell me
where or why the above statement is wrong, then please do so.

Quantifying climate sensitivity from real world data cannot even be done
using present-day data, including satellite data.  If you think that one
could do better with paleo data, then you’re fooling yourself.  This is
fine, but there is no need to try to fool others by making extravagant
claims.

Coffin, meet nail.