By the end of 2 , Michael has
-alienated and humiliated his adoptive brother
That was indeed harsh, everybody likes tom.
-slapped his wife and rejected her love
Also very harsh and unnecessary.
-ordered (or at least tolerated) the death and mutilation of an "innocent" hooker
Lol. Who cares, she was just a .. oh I'm sorry. But we don't know if Michael was behind that, more likely Tom or Neri.
-threatened the innocent brother of a recalcitrant lieutenant
He
had to to that, so that's quite understandable.
-ordered the suicide of a broken old man
That broken old man should have known better and had it coming. Also understandable.
Giving an enemy a pass is of course unusual for any oc figure, real or fictional but IRL Magliocco got one despite plotting to murder Lucchese, Gambino and Maggadino.
They gave Magliocco a pass because he was already very sick and everybody knew he would die sooner or later. But he was stripped from his position.