Another note, noone is forcing you to fight them.
If there is a part of the content that is so powerful that even you admit its possibly too powerful unless you make a perfect skill progression designed to counter that content specifically – that means we have a balancing issue.
Also i can make the same argument you did:
Another note, noone is stopping you from playing on highest difficulty setting, if brutal challenge is your thing (whether it be overall difficulty which i find alright or specific enemies, in which case i call Orc Warriors brutally OP).