Effective Altruism is a scam. Sam Bankman Fried's guru tried to distance itself from the fraud that happened, tweeting he needed to "reflect" on what happened but... He hasn't handed back the 15 million GBP property bought in England with stolen funds donated by SBF. Now even to this day there are still funds being clawed back from the Enron scam (or at least there was still a few years ago) so that mansion may be clawed back from the Effective Altruism movement, even if it take years.
They're simply a scam. Like most sects.