If it gets shut down due to whistleblowing it had got to be better than continuing a problematic charity. It's not ethical to run a charity the way this one is claimed to have been. The end never justifies the means. A corrupt charity with bullying and harassment at board level will never be able to get the right donors and support, nor deliver services in an ethical and sustainable way.
It is too funny that Harry and Meghan do not understand what philanthropy is when Meghan had so very much wanted to portray herself as a saintly sophisticated philanthropist. The allegation that Sussex changed the charity polo event's goal post by inviting Netflix for their own gain without consensus or communication with the charity is deeply concerning and profoundly undermined the charity.
If the charity has to go, there will be a new one. Probably founded by a more credible member of the royal family, or perhaps a real life, up to date, ethical philanthropist.