It is wrong to say may Allah be pleased with him as this is usually only said to the companions and Yazeed was not one of them.

He is a Muslim and he had bad deeds and good deeds. We neither love him nor hate him. We also don’t believe that he ordered Al Husian, may Allah be pleased with him to be killed. He was very angry and sad when he was told of his death and he cursed the killer and those with him.