In 2020, J-Milla pledged to donate the earnings from his single "Unlock the System" to the family of Kumanjayi Walker, an Aboriginal man who was killed during an arrest attempt. The song was strongly supported by the ABC radio station Triple J. In November 2020, he performed at the TREATY festival as part of NAIDOC Week at Tandanya in Adelaide, along with Dem Mob, MLRN x RKM, and shared the MC duties with actor Natasha Wanganeen. J-Milla was selected for TikTok's online music festival that year.
He performed on the closing day of the Adelaide Festival in March 2021, at an event called "Hip Hop Finale", along with Ziggy Ramo, JK-47 and Jimblah.