While true that they are concerns, the first article you linked notes that those started to be clamped down on 6 years ago - would be good to have an update. A

While true that they are concerns, the first article you linked notes that those started to be clamped down on 6 years ago - would be good to have an update. And also, the scale of methane leaks compared with cfc11/12 means that even though they have ~3-4x the GWP of methane, the impacts of poorly tracked methane leaks are astronomically higher.