Maybe someone somewhere has made a comprehensive list of reasons porkies do philanthropy. The word philanthropy largely implies that we talking about porky’s ill-gotten gains and not our wages. AFAIK the major reasons are PR; tax advantages; backdoor investment; ego fulfillment; and power, both in terms of wielding it and in accumulating more of it.
As usual, Second Thought’s video provides links for deeper dives: Why Billionaire Philanthropy Won't Solve Anything
Edit to add: Oh, this was a link to an answer. I thought you were asking a question 😄
LaRouchites aside, you’re preaching to the choir.