Is it understandable the way fredo reacted after being stepped over by mike?

He must have been hurt and Roth and ola creating more problems by stirring the sitution its understandable why he acted the way he did.

What do you think?

Also what do you think Fredo felt when his father made mike the don and not him and when mike says says "pop wanted it that way".

did he hate his father, i think he was hurt by his father because he says "thats not the way i wanted it!".

Your thoughts?