Why has this part of D328 an access:conditional : no@week 17 - 47?

Is this :
- A left over from the 2015 - 2021 construction  https://www.hautesavoie.fr/acces-praz-de-lys 
- a misunderstanding how access restriction work. Currently summer is closed, winter is open?  https://wiki.openstreetmap.org/wiki/Conditional_restrictions
- an act of vandalism?
