Keep reading - ENR 1.1
2.3.9 Terrain and Obstacle Clearance
Obstacle/terrain avoidance while below the LSALT or MSA, as
applicable, is a pilot responsibility except in the circumstances
described in para 2.3.9.1.
2.3.9.3 If visual reference is lost, either through equipment failure or
deteriorating weather conditions, crews MUST CLIMB to the
appropriate LSALT/MSA and advise ATC as soon as
practicable. ATC will treat this as an emergency situation and
may apply emergency separation services.
Not to mention you cannot legally be below LSALT/MSA in IMC without being vectored or following a published approach procedure.
It's a dead argument - move on.