Mmutle, who serves as whip of the ANC's study group on defence and military veterans, condemned the theft of 19 automatic rifles from the South African National Defence Force's Lyttelton Tek military base in December 2019, saying: "It is horrific to imagine the safety of the public when there are dangerous warfare weapons on the streets, as this poses a serious safety risk to citizens and leaves much to be desired about the security of the republic."[4]
In September 2020, Mmutle defended Defence minister Nosiviwe Mapisa-Nqakula's controversial trip to Zimbabwe with an ANC delegation, saying it was "to conduct important work in support of human rights".[5]
Mmutle is a staunch supporter of ANC secretary-general Ace Magashule and former ANC president Jacob Zuma.[7] In October 2020, he was one of the organisers of the "Hands off Magashule" campaign. He said that there was "no reason" for the ANC to delay a national general council (NGC) meeting amid the COVID-19 pandemic. Mmutle supports the nationalisation of the South African Reserve Bank as well as land expropriation with compensation.[8]
In March 2021, Mmutle was one of several ANC MPs who supported Magashule's position that the ANC should not vote with the opposition to establish an inquiry to investigate Public Protector Busisiwe Mkhwebane's fitness to hold office.[9] The National Assembly approved the establishment of an ad-hoc committee to determine Mkhwebane's fitness to hold office on 16 March 2021 with 168 out of the 230 ANC MPs voting with the opposition.[10]