What's that word? Subjectivity, I think?
It's not 100% subjective and people dive to that too often.
There's whether you like dislike something and what it is separate from that.
Ico deliberately has controls designed to create feel of a young, somewhat clumsy, energetic boy. They succeed. They do this better than smooth controls would.
You may not like that if you'd rather have smooth controls but that's your personal view. IT doesn't change the fact the controls of themselves are fine and achieve their design goal as well today as they did then.
Little in life is 100% subjective but people jump to it because of social trend for inclusion and individualism.
The controls in Ico objectively from as design perspective work as intended and deliberately so. SOTC too. They're not janky and they're not badly achieved. They're just of a design principle not everyone will like.