That posting it now is trumputinist propaganda.

It mostly makes sense. There are infamous examples of voting being de jure or de facto illegal for groups of people where their suffrage would likely cause significant change. Just look at the USA pre-Civil Rights Act, Rhodesia, Apartheid South Africa, and Israel. I'm sure there are others.

if voting made no difference, then why do they try their hardest to prevent poor people and minorities from voting?

i think it's misguided because voting can have an impact; but doesn't since that's the extent of civic engagement for an overwhelming majority of americans which leads to manipulate-able voters who have to use their emotions to decide on things that they know nothing about.

It makes perfect sense coming from you.

If voting wasn’t important than republicans wouldn’t make it so hard to do.

Pretty obviously false, and I'd genuinely question the social and intellectual capabilities of anybody who truly believes this - originally sarcastic - phrase.

False in theory, true in practice. It is rare for the political landscape and a majority vote to align in such a way that it really has a disruptive effect. And in those instances wherein it happened, wasn't uncommon to see a coup afterwards.