Accepted, I wouldn't want to be solely dependant on a supercharger. I'm not even sure I need a supercharger. Has to be home-charging for me.
It's possible, at this point in time, that maybe you aren't the demographic. I wouldn't blame Musk for that, really. More of an city infrastructure issue. I mean, I don't see a huge push towards generic charging points all over the city despite things moving in that direction.
There was some green deal thing a year or two ago where they were subsidising charging points at home ... of course, they scrapped that ... I guess that wouldn't help you anyway.
Maybe you're better off with a hybrid and get a Tesla when either the city charging situation improves or your home situation changes.