Dumbass, in the scenario posed the danger was coming from behind. How the fuck is slowing down gonna save your ass when a Semi is barreling down on you and has no room to stop before slamming you as it is. Or I have a real-life situation where burst speed got me out of certain death.
I'm cruising down a 2 lane (one lane each direction) road with my wife on the back of my bike at 55 (posted limit). Good visibiltiy and no blind curves for about 3 miles down the road, and I could see the road for 2 miles behind me in the mirror. There's a Bar-B-Q place on the right hand side of the road that we're coming up on about 500 feet ahead, Black Ford explorer is coming at me slowing down with the left turn blinker, I instinctively roll back off the throttle and now I'm 60 ft away at 52 MPH...then she turns left. I looked her dead in the eyes and she still turned left. I have two choices here, brake hard and slam into her, or gear down, lay on the throttle to pick up Gyro Force, and go into a swerve around the back of her. When I made the commit, I had about 20 ft of space and she was still in my lane, oblivious to the havoc she just caused. Once my swerve started, I put my thumb on the red button throwing the quad Stebel Air Horns on. I made sure that I did this after the path commit was going to be guaranteed to be behind her turn just to make sure that I didn't throw her into a panic that would have made the situation worse on me. In roughly 40 ft. passed the SUV I was back in my lane and at level cruise at 72 mph, letting off the throttle to get back down to the limit and continuing my Sunday ride to the next gas station where I could figuratively change my underwear. Another biker a ways behind us saw the scene unfold and caught up with me at that gas station and asked why I didn't stop and confront the woman as I would have loved the look on her eyes after she heard the Stebel go off right behind her. I just said "I have an aversion to 20 to Life," and left it at that.
If I had followed your logic, I'd be either dead or in the hospital right now as this only happened a week and a half ago and in no case would my bike have come out of it in ridable condition. If I had hit the brakes, I would have slammed into her and that's the end of our ride. If I slowed down to initiate the swerve, my tail would have fishtailed and either my wife would have been the first one into the SUV, or we would both be flying off the other side of the road into the ditch with the bike following us, again ending our ride. If I touched on the brakes at any time just before and during the swerve, as soon as I touched into the swerve, I'd lose all maneuvering traction to the brake traction and likely the 900 lbs of sport touring bike would have bit the pavement on the front wheel and done an end over end flip down the road behind the SUV, yet again, ending our ride.