IIUC, the article discusses two phenomena related to charities outliving their original purpose: (1) (as you mentioned) pivoting to a new cause. (2) increasin

IIUC, the article discusses two phenomena related to charities outliving their original purpose: (1) (as you mentioned) pivoting to a new cause. (2) increasing the urgency / direness of their messaging, because making progress on an issue causes their audience to de-prioritize it relative to their other concerns.