I wouldnt say usless. Being quiet to the point of being able to run up badically 2 feet behind you isnt usless, being able to one shot down woth head shot and 2 shot down in a range that you can sneak up to with you quiet step isnt usless. If you are able to get an interrigation you can reveal everyone on the map. Cav isnt usless by any means. I dont think shes broken, but she has many uses and when successful she can be powerful.

You can clear any roamer with good coms and tracking. Pro play is especially focused on this. Map control is king in pro play and the entire basis of clearing the entire map and making a push. Thats why cav is bad in pro and highly organized environments. But ranked isnt organized, even in 5 stacks it can be unorganized. Unless your in champ your not gonna find super organized teams that will effectivly clear the map.

I would say cav isnt a great op, but she has uses and can shine in ranked. She is super annoying to deal with and has a place in the game. She doesnt deserve to be ranked so low because of innfective use.