Exactly right. Instead, you make the carving movements but don't lock in the edge. The ski shovel engages the snow and pulls you around. For a tighter turn, you need more edge angle and more force on the ski tip--more weight forward--and do it all earlier in the turn, in the top 1/3rd of the turn.
Rotary movement is like a religion. It has to be right, because it is doctrine. Anyone who isn't a believer is an apostate and shunned. Well, sometimes this doctrine just doesn't apply.
Note the skier in this video. He's on a steep pitch. He gets his edge angles and gets the tips engaged well before the skis reach the fall line, thus establishing his turn radius. Especially in the slo mo parts, you can see the snow flying off the ski shovels. That's what pulls him around in the turn, as tightly as he wants.
The skier in the video is carving his turns and he could not cut the turn radius in half if that was what he wanted. He is carving as close to as tight as he can get. So its not as simple as pressure the tips only.
And BTW, tipping and femur rotation is the same thing.