The fact is the wigs of decades ago were very noticable that hair hair was not נפש חיונית
What the ישכיל עבדי is saying is that it has nothing to do with how it looks. So you can repeat your assertions that these look different than the older wigs, but you are missing the point of those who are mattir. They hold that as long as the actual hair is covered, it’s muttar even if it looks real.