Corbyn won a landslide election. He has a very strong mandate to lead the Party in the direction he promised when campaigning, and so it's only natural that he will seek to structure his Party accordingly and give prominent positions to those whose views are more representative of the people who voted for Corbyn.
Where is the issue here?
He refuses to be beholden to the Lobbyist and Media.
Corbyn first elected when he succeeded Michael O'Halloran (From Clare) in 1983, O'Halloran has jumped ship to SDP when all Islington councillors did but Labour regained all seats at next council elections
People are not seeing what is happening in Politics where the Media / Lobbying is turning people against politicians, Le Pen and Trump are not quirks in election process.