I think generally terrorism has some other connotations which is why this is raising antagonism among Ukraine supporters

I don't think this is causing fear as the citizens do not feel threatened, as these are military targets. I think the feeling is more of the sort of "humiliation", which can indeed have valid political implications that may affect the war.

Putting aside that, denying the enemy its strategic bombing methods has various advantages in a war, such as less damage to infrastructure and in this case increasing domestic morale due to military success, and reducing Russian ability to demoralize by bombing cities