I'm flattered you called me "Son" for a man in his late 60s.
I do agree some cars are very difficult in the snow and i have always alternated between large luxury cars and sports cars. My last car prior to the Tesla was the Focus RS mk3, 4 wheel drive and 385BHP and that car with the same tyres as the Tesla drove better than i anticipated, so far this winter I haven't had any snow to drive on - well we did have an inch but it wasn't particularly an issue. I'm looking forward to some snow as i always take the car for a drive so i can get a feel in snow/ice before i attempt a proper journey.
My comment about the ADI was a suggestion not a sleight on you or your driving prowess, I don't know you and don't know your level of skill, some people may drive for 50 years and never develop a synergy with a car or be a good driver, its not about time of driving its about what you learn. My wife for instance hasn't a clue with a good driving style, cant park properly, reverse is a complete mystery and travelling as a passenger is uncomfortable as its either brake or accelerator pedal pressed - and i can never convince her there is another way.