Isaiah was entitled to his opinion. The mother ofIsaiah 45:1 is about Cyrus... Anointed.. Emmanuel.
Isaiah 45:1 - God Calls Cyrus
This is what the LORD says to Cyrus His anointed, whose right hand I have grasped to subdue nations before him, to disarm kings, to open the doors before him, so that the gates will not be shut:biblehub.com
Cyrus named him CYRUS---not Emmanuel. Various
jews have had HEROES over the millennia -----generally rulers who did not murder them. Franz
Josef of the Austrian-Hapsburg Kingdom was another
HERO for jews