This goes to all the peeps who support parliamentary voting as a valid political action.
If your society has been steadily progressing towards fascism for decades regardless of your voting (like the USA has been), is there any point, any action which will convince you that voting ultimately doesn't work?
Is so, what is it? What would your government have to do for you to acknowledge that voting doesn't matter? For many people, it was of course, supporting genocide (which is why so many states desperately try to deny a genocide is ongoing). But if genocide isn't, what is yours?
Eventually a society which has been slowly progressing towards fascism regardless of voting, will become fascist. And we all know what comes after that. There's always one thing where I think even the most hardcore parliamentarian will agree that voting ultimately didn't work: When they're personally being force-marched to the mass grave-sites.
Would that be your point? Or does it come earlier? If so, when?
Voting as valid political action: Valid as in correct, no. Valid as in relevant, yes.
~~Societal~~National (personal: GER) progress towards fascism: ~20-30% far-right extremism (state-labelled) since 2015 with regional disparities. Regional liberal-antifascist campaigns have been moderately successful, but the response to CoViD impacted far-right radicalism, media campaigns against migration are constant and begin to bear fruits. East German antifascists begin to see local lost causes for campaigning.
Function of voting systems is periodic ruler succession, the alternative without any disruption is inheritance. Anarchists don't want any rulers, inherited or voted, but anarchists aren't too commonly a critical population in a society.
Functionality of voting systems is broken when trust in personal choice, equality and secrecy in voting of rulers is broken. Ruler sucession voting systems don't ensure ruler behaviour.