It's complicated to explain, but in the republican(/conservative/trump supporter) mind "activists" are (in support of) "far-left marxist communist liberal extremists" like Biden, Obama or Harris, so the FBI/CIA/NSA under the Biden administration were protecting them and calls for making encryption illegal only targeted "the republican" so activists supported ending encryption because it benefited them in their unjust war against republicans. So if they now see activists discussing opsec, they view it as liberals being "scared" at the righteous Trump administration coming for them.