People won't be fooled by the resignation of Morgan McSweeney today. McSweeney may well have generously and courageously offered the resignation to save his boss in the short term. Starmer had the choice and could have chosen to fall on his own sword instead.
McSweeney is Irish and the Irish have been used as scapegoats before. People are alert to that phenomena.
More significantly, the Epstein saga is far from over. Bigger heads may yet have to roll anyway. In that case, McSweeney's resignation may have been a wasteful loss of a talented employee. McSweeney may have had a useful role helping the party recover but now his name is tainted by this affair. It may have been better for somebody more senior, perhaps Starmer himself, to accept the blame immediately.
Other employees of the British Labour Party may well be demoralised by the situation, especially if subsequent inquiries reveal that more senior elected officials had known just as much or more about this affair.
Its worth remembering Keir Starmer's former role as director of the Crown Prosecution Service (CPS), equivalent to the District Attorney in the United States. When Starmer had that role, for better or worse, he introduced the policy that police have to believe every person who presents themselves as a victim of abuse. He expected every report would be investigated, checked and checked again.
Despite introducing this rigorous policy in the CPS, his own administration has failed to be equally thorough in vetting one of their most senior and high profile employees, the ambassador to the United States.