Yes. Because if he hadn't done it, sasuke would have died along with his entire clan

I mean it depends on how people see it tbh

He wasn’t, but Shisui was forced to give up his eye making Itachi indirectly forced to do the same

Either Itachi had the choice of killing his clan or seeing half the village (including the Uchiha) dead

Whatever it is, it is all Sasukes fathers fault... even if the third Hokage and Danzo tried to negotiate it they would be killed