What you are talking about is accepting stolen funds or goods. That means the source is illicit, but it doesn't say anything about motive. Motive and source of the funds are different things. I obviously don't support crime or people knowingly accepting stolen funds. You can have a bad motive with legal funds, a good motive with legal funds, a bad motive with illegal funds or a good motive with illegal funds. Your conflating of these concepts is bringing a different aspect I didn't comment on, but I can:

If Mr. Beast steals money to donate it I'd be against it regardless of motive.