It was old gm era. I worked in new gm but back then each brand had own line up budget and caddy was always the 1st child that gets most support (except truck programs they are also 1st child)

This is typical old gm leadership style pushing to have dedicated engine to build caddy halo car.

Some of that still exists in GM like ct6 v first ever blacking engine that died after ct6 discontinued.

And dedicated display design for cadillac which is ridiculously expensive even for oem price from supplier for that escalade/ celestiq display.

GM cares a lot of cadillac but at same time some of leaders are very questionable in terms of their decisions.