What caused so much fury when the domestic took the regional flying was that this is the sort of flying that traditionally gave international FAs a break from the debilitating effects of proper east west long haul flying.
It was largely time zone benign, short in duration and most importantly for many, family friendly.
Throw in the effect of denying access to the regional destinations that literally hundreds of language speaking FAs were employed to service and you've got resentment together with a reduction in the value of customer's experience.
All so the domestics could do a little shopping
Excuse me while I barf.