I know for a fact that some San Jose cops were at least this stupid as well in the late 1990’s or so.
I remember back in the 1960s, my stoner little sister planted pot in the flower boxes outside the local police station.
She told my mother that the seeds were vegetable seeds. Mom helped her germanate them and she planted them in the garden. They grew until the gardener asked my mother whether she knew she was growing pot out by the swimming pool lol.