changing the slogans doesn’t help because the target isn’t the words, it’s the underlying demand.

I guess my point is a base/group can’t increase membership/size if no one knows what they stand for, or believe they stand for something else completely (misinformation propaganda).

propagandists will weaponize whatever language you use if the politics behind it threaten them.

Agreed.

the way i see it conceding the rhetorical terrain just means constantly retreating to increasingly watered down language while the actual demand gets no closer to being heard.

I may not have previously conveyed my thought clearly. I never meant that any slogans/idioms should be watered down. More that they should be utilized like guerrilla warfare. By the time the propagandists have a counter to a slogan, the movement would have already moved to the next (the underlying sentiment/demand remains the same, the words relaying the goal are constantly shifting to prevent capture/misinformation propaganda).

Also, if a slogan doesn’t get countered by the time its switched out, the movement could go back to it again later. The slogan’s return could act as a unifier between the groups the different slogans energized, as I suspect different slogans will have different effects on different sub-groups, and returning to a prior slogan could let everyone know they are on the same team, even if they didn’t know that previously.