Rural living can be inefficient, especially for people who want the best of both worlds: lots of space and quick access to amenities. Fossil fuels are what made this possible, in moving away from them, rural living might mean living closer to how things were 100+ years ago. Or maybe it means living an rural lifestyle is just an expensive luxury.
For me I'm genuinely not too bothered about getting around, my friends are already scattered over the country in the course of their careers so if I want to see most of them I'm getting on a train regardless of urban or rural life. I work from home so commuting isn't a concern any more, and while I do currently live within fairly easy (20 minutes or so) cycling distance of grocery shops I can get much further on the bike if I have to - without a commute I have time for that kind of thing. While I'm leaving it behind temporarily to travel (planning on living on a sailing boat for a few years and seeing more of Europe now covid restrictions are going away) my plan is to eventually set up somewhere even more rural and go as off-grid as possible with a view to minimising my carbon footprint as low as I can and generally being at least minimally self-sufficient for the next global crisis. I've been learning to drive later in life than most due to medical doubt whether I'd be safe and rural life without it is definitely possible without being rich - it's just less convenient as you point out.
I'm lucky that most of my hobbies are either outdoors by definition or don't really need anything more than a plug socket which isn't the case for everyone, I get that lots of people couldn't hack living out in the country away from the things they do and if others want to urbanise I don't have an issue with that but for me personally I couldn't do the reverse either. It just grinds my gears when people think all humans are compatible with urbanisation because for me it really is the difference between an ordinary life and being profoundly depressed on a permanent basis.
That same infrastructure supplies consumables to urban residents and removes garbage, the residents aren't self-sustaining. The infrastructure doesn't exist solely for the benefit of visitors.
That is not true to the same degree. If urban roads were only for supplying goods and removing garbage - not accommodating visitors - then the width of roads and size of parking lots would be vastly reduced. Look at Tokyo.
