It was not endorsed in the legal sense, the writer is using that word to justify his claim, in the title, that the plan has the "green light".

Endorsed, in this context, means that it was mentioned in cabinet, and the soldiers present agreed that it sounded like a fine idea. This is no different from all the other times it has been discussed, but nothing has actually been drafted, given the go-ahead or any sort of actual green light. This is just the usual spit-balling and bullshit.

The best way to tell when a Thai expat website is trying to magic up a story out of nothing is that none of the other major expat websites have bothered to mention it. When a real new visa is introduced, such as the current 10-year visa for retirees, you will see it being discussed on all the sites.