Facebook’s oversight board, which on Wednesday upheld the company’s ban of former President Donald Trump, also had some harsh words for its corporate sponsor: Facebook. But critics aren’t convinced this decision is a triumph of accountability, and say its actions may actually distract from more fundamental issues that Facebook seems less interested in talking about. Among those concerns are Facebook’s massive power, its shadowy algorithms that can amplify hate and misinformation and its desire to avoid regulation. Facebook said the board provides scrutiny and accountability for the company and that it is no substitute for regulation.