Management has a purpose - but companies poor treatment of engineers over the years has blinded many engineers to this. A great manager ensures their people are pointed in the right direction, makes sure that they're not running into roadblocks, and frees up their people from dealing with bullshit so they can be the best they can be. This really doesn't have anything to do with "oppression", or whatnot.
Managing is orthogonal to engineering - and saying either is worth more than the other is simply wrong. If we can decouple the ideas of "managing" and "building" with systematically being valued / paid more or less than others, we'll have progress. Right now, most are erring on one side or the other.