Then, after the crushing "Get Brexit Done" general election defeat, Blairites prepared their boy Sir Keir Starmer to take the party leadership by not only sweeping his track record under the rug, but by initially falsely co-opting Corbynism policies until he'd secured the spot, at which point he could dump them and begin the purge of leftists from the party: https://www.silencebreaker.media/no-embraces-no-fanfare-no-rallies-sir-keir-starmer-wouldnt-have-it-any-other-way/