Not so because multis are fast enough that they capsize both
from pitch-poling and going over sideways whereas monohulls
being constrained by hull speeds rarely pitch pole. Furthermore
multis actually capsize easier sideways because once they get
to 90 degrees it's Katy bar the door while monomarans regularly
right themselves from a 90 degree position.

90 degrees!? Every catamaran experiences negative stability (ie, Katy bar the
door) well short of 99 deg.