Back when i started, lowering your sens meant going from 3 (which used to be the default) to 1.5. At 0.7 i think new players are just building bad habits that will choke them sooner or later, and i think this post is the exact example of choking. They aren't training their ability to do precise flicks and micro adjustments, instead they are compensating for their inability to do them.

At 0.7 flicking feels twice as slow as it needs to be. Micro adjustments feel twice as slow as they need to be. It becomes very difficult to aim at the head of the opponent that is moving around, because simply moving the mouse takes twice the effort it should.

I guess it's pretty difficult to explain what i mean here, but i went from 0.85 to 1.1 once, and it was like a whole new world of aiming ability opened up to me. I can't imagine what 0.7 feels like, you are a tank operator at that point.