I do see that Nashville had decriminalized it in 2016, but it’s kinda weird since the article I posted definitely acts like it was still criminalized in 2020. I can’t find where the chief of police says anything about it being decriminalized, in the article he just says
“I agree that General Funk, as District Attorney, has the authority to determine what cases to prosecute,” Chief Anderson said. “Marijuana possession remains a violation of Tennessee law, and we cannot be in a position of telling our officers to begin ignoring lawful statutes passed by the legislature. Nashville police officers continue to be encouraged to use their discretion in carrying out their duties, as guided by MNPD policy.”