Instead, I will assume that the FDA has not reversed a decades-long policy without evidence stronger than a local news station which uses a local weed doctor as their quotable source.

The change in _stated_ FDA policy is a huge shift. This explainable-by-a-simple-mistake news article seems much more likely to me. This article header says "Posted at 5:43 AM, Mar 21, 2024 and last updated 2024-03-21 20:13:30-04". That's a 100% full business day where _no other mainstream media_ picked up the story? Possible, but not likely.