I'm obviously 'of the old school' because when I was taught to drive I was taught it was good manners not to have your brake lights shining in the face of the driver behind. But these days such common courtesy seems to have gone out of the window. Everyone now only seems to be interested in how things affect them and not others.Without wishing to sound like a d*ck (quack quack), the answer is 'more effort than I'm prepared to expend given I've only ever experienced push-back against brake lights from a few people on this forum'.
If I spent my life getting flashed / beeped / flipped off at every set of traffic lights I'd change my behaviour but until that day I'd prefer to keep using HA.