A couple of things.
1. Teslas with shipping + import taxes end up being like 15k more than what it cost here. This compared to cheaper domestic made EVs, Teslas are actually very expensive.
2. Autopilot is pretty much useless in China and I don't believe the subscription rate will be very high. I am from Beijing, and from what I recall, road markers are almost nonexistent and off high way traffic is ridiculous. No one follows any traffic laws and it's almost common to have bikes and people just run into your car as you try to squeeze through. It's a freaken mess and I know I have a lot of problems driving in China.
3. You have to understand that most people are NOT living in single family homes. Those are extremely rare since condos are a common place. Tesla needs WAY more charging points in order to win over the Chinese public. But I understand they have a lot of level 2 220v chargers all over since the electricity is already 220v.
So perhaps this is a way to generate some orders for the Chinese new years or Tesla figured EAP is not very popular in China. I know I wouldn't get it if I was over since it's pretty much useless.
You've made some very fair points. However, none of that extra cost (tarrifs and import taxes) end up in Tesla's hands. Tesla needs cash right now, if they had sufficient demand for vehicles at full price I can not fathom why they would send them to China with free AP. Perhaps they think more M3s on the road will spur sales, or justify charger installation costs.. these ideas seem like a stretch. I also, can not wrap my head around a population of 1.4bn people without significant initial demand. Something is going on and I'm at a loss.