I would tend to agree with this statement, unfortunately it looks like the frost or snow will be confined to 500m + - mainly the Peaks and other high areas.
You can see the Azores high pushing in here, and we all know they are super hard to remove once firmly in place.
I don't see any easy route to cold from here, it's looking really poor the more you go through the ensembles. Is the GFS wrong? Only time will tell, but it looks like a short lived little snap before a return of the Azores.