That's just for the cars with that yoke steering wheel, right? The controls for the more "normal" cars is pretty intuitive. Except for headlights. I don't know why it couldn't just have a switch for headlights.
It's in progress, I think. Ford and Rivian just gained access to the network about a month or so ago, and I think that other manufacturers will be added over the next year or two.
I think that there's still a perception of electric vehicle owners as being fanatical and unrealistic (e.g., "Tesla fanboys") that really isn't true. Yeah, they want EVs to work for everybody, but if someone without a feasible charging environment shows up to a place like r/electricvehicles they aren't going to try and sell them on it.
That's been talked about for thirty years now. So far it doesn't seem all that feasible until we see a significant reduction in both the size and weight of these battery packs.
Your tire advice is pretty scary. Unless you are very certain of the sourcing of these used tires, and you live somewhere that doesn't see any precipitation or inclement weather, you are taking a serious chance.
From what I can tell, the average American drives somewhere between 12,000-15,000 miles a year. The average oil change interval for modern cars is 7,500-10,000 miles, so using the higher interval you would expect to change your oil roughly twice a year.