I noticed one of the recently elected councillors in my area had some concerning points in there BIO about climate change denialism. Checked their social media and it's filled with people crying about 15 minute cities.
The depth of their ignorance knows no bounds, as we already can be classed as a 15 minute city.
I have not researched them at all. I heard a guy on the bus the other day chatting. Saying that in them, you should have everything you need within 15 minutes (good), but if you want to use a resource outside of your zone, you're going to have to pay a tax or similar (bad).
Sounded too extreme to be true. Shrugged and moved on.
What you overheard about leaving the zone and paying a tax is a bit of an exaggeration.
The intent is to discourage car usage within the zones, and one possible method is a levy on vehicles entering them. A better method is improved street design.
There hasn't been a proposal I'm aware of that actually prevents people moving around by any means of transport other than private motor vehicles.
We are already taxed to move about though. Roads cost a lot to build and maintain and are paid for with proceeds from taxes. (And no, fuel excise does not cover all of it)
We also subsidise health care. Cars cost us a lot there too in terms of health outcomes from their emissions, crashes etc.
But, we are specifically not free to move about the country. There is a lot of locked land we technically need permission to be on, sometimes even national parks, the most public of public land, costs us to get into. I think what you're really thinking about is road access, which can/is already subject to taxes and tolls. All these taxes are in our lives without '15 minute cities'.
Taxes need to be redesigned from time to time to reflect the changing nature of our country. The GST's introduction was a good State wealth booster, much like the recent tax cuts have a solid argument, regarding re-indexing, even if the design of the policy itself has problems.
The 15 minute city is a long term restructure of the built environment, it won't be a single bill, or a politicians election platform. So you'll have the chance to vote against the parts you dislike, and vote for the parts you like, but most of all we won't notice the changes, until we one day realise we walked to the gym instead of driving.
Its a long term redesign or our built environment back towards the human scale distances and sizes. This is because there have been far reaching negative consequences to leaning into the car scale built environment we have now.
If riding on the bus for an hour to get to work/school/hospital annoys you, then 15 minute cities is probably worth a deeper look.