Spare us the bollocks spouted by people who have no idea what it's to be like in a classroom where there is a kid who is constantly pissing around, shouting, winding up other kids, throwing things and absolutely not letting you teach in any meaningful way at all, and there is no way to get rid of them.
I'm not the only teacher who has had a school who has gone through the Paul Dix process of removing isolation rooms, emphasis on keeping disruptive kids in classrooms, and of 'restorative conversations' being the only sanction for wrecking the education of the other 29 kids in the room (who also start pissing about because there's nothing else to do). Behaviour plummets, teachers quit en masse and then the school realises that there's an issue and slowly re-introduces a room you can send kids who are pissing around to, sanctions that are inconvenient for the pupil but not the teacher, and the expectation that children should be allowed to learn.
An isolation room is not isolation booths. It is a room where you can remove disruptive kids to. If the government decide that schools don't need a room where you can remove disruptive kids to, then that will be a disaster for classroom teachers. Been there, done that, I've never been so close to quitting teaching.