Sad truth is that you cannot extrapolate any conclusion from existing EV ownership. Current EV owners are enthusiasts and those that are lucky to be in position to be able to afford and operate EV.
They are more anomaly than something that can be used to extract plans how to go forward.
As you yourself say topic was "mainstream use of EV". Not so soon, not until infrastructure is built. And that is something that will be really hard somewhere and not so much somewhere else..
The question, in my opinion, is if the reason most EV owners today are enthusiasts (I wouldn't call myself that, but I see your point) is for any real reason, or due to lack of information. Take the two biggest sellers of EVs in the US, Tesla and Chevy. Tesla almost single-handedly raised the level of awareness of EVs, but have a reputation of being very expensive. Chevy on the other hand built two superb cars, but did little to nothing to advertise them.
Infrastructure won't take off unless there's adoption, and adoption won't take off unless there's infrastructure. The usual short cut is government incentives, but I do think some evangelism can go a long way.
A lot of scattershot ideas with basically zero meat (private charger sharing, for example). The only half way reasonable one was DCFC (think ChaDeMo, not death cab for cuties...) on city properties and that hasn't happened. In fact, instead of requiring that apartment construction include EV charging in parking spaces (or at least wiring for it) they have now allowed apartments to be built with no parking at all. And the extent of their support is adding a handful of Level 2 chargers in random on-street places. (It's been shown that L2 chargers get approximately 1 use every two days, FAIL.).
That sucks, I was hoping for better results. As for L2 charging, I live in a medium sized city of 150,000 and all the city-owned parking structures have free L2 chargers, with free parking on Sundays. I get brunch and some shopping done for a couple of hours and get about $1 of free charging, or 45 miles added range. It's a nice incentive and the city probably made more money in taxes than they spent on my free charge. They are also providing subsidies to businesses that would like to install L2 and L3 chargers. Sadly, very few takers for L3 charging so far.