Has anyone ever actually said, "I think we should have all services within a zone of 15-minute travel, and we should restrict people from leaving their zone, and this is called 15 Minute Cities and I support that idea"?
"Having services readily available" is the entire idea. "You're not allowed to go to another area" is nonsense that someone else tacked on to the concept to make people hate it.
It really is. You'd think they'd choose a positive news story.