Can the STM police mask laws?

Valérie Plante says she’s happy about making masks obligatory in the STM but accepts that the STM has no authority to enforce the rule. Of course the Journal has to “balance” their story about the mayor with criticism from both Lionel Perez and Marvin Rotrand, ignoring the fact that whatever Plante did or said about masks would be loudly interpreted by those two as the wrong thing.