It's not about whether A/S do or don't work in winter. You could be driving on Tonka plastic wheels and still survive. It's that winter tyres offer a MUCH BETTER grip - and you never appreciate it if you don't try it simply because it's impossible to just 'imagine' the improvement.
Prefering less grip in winter... with all due respect, it's one of the most idiotic things one could write on a public forum. Go visit a hospital and tell that to those who were injured in winter driving accidents, where that tiny difference in grip could have actually prevented - or lessened a crash.