‘The Crown’ reloads with new leads and old troubles in a more disjointed fifth season

Questions of propriety about the fifth season of “The Crown” premiering two months after Queen Elizabeth II’s death are largely eclipsed by other issues, as the Netflix series reloads with new prestige talent in key roles and old troubles, while feeling more disjointed than unusual. The result is an uneven campaign that reinforces a sense the Emmy-winning series risks extending its reign too long.