Lol. Leftist is when no vote. Leftism is when political irrelevance. If you're not engaging in the state's political system and not preparing for violence, you're mostly just larping.

A smart leftist would hedge their bets and use electoral politics to garner popularity, organize workers movements, and train in self defense, using all those avenues for power in whatever way works best given the context. The anti voting attitude hasn't worked at growing leftism for decades, while Bernie Sanders and DSA sponsored candidates have boosted the left more anything.

Organizations aren't enough. Fascists only speak violence, so leftists stand no chance against the state. Fascists don't even stand a chance if they lose enough internal support. The state's systems must be engaged with because it has a strong monopoly on violence. No amount of workers unions can oppose an army. Your own logic doesn't even support your approach.

Growing power is necessary to change the world. Might does not make right, but might is necessary to succeed. Viewing liberal democracy as insufficient isn't the same as it being inherently immoral to use. Your leftist credibility isn't worth shit when you have no power to back it.