Apparently it's for misinformation campaigns trying to turn the left against voting in the upcoming election.
Remember folks, apathy is one of the biggest tools in the GOP's arsenal. Pretending like a post is coming from some bleeding heart liberal to make it seem like the Democrats are JuSt As BaD as the GOP. These type of posts are here to make it seem as if both parties are the same, all so you decide to sit it out on election day. A low voter turnout only helps the fascists of the Republican Party gain more power.
The OP tweets directly dispute your claim because they show there's little material difference between the two parties. Voting for Dems means getting almost exactly the same as voting for the GOP but with crocodile tears. Looks like Dem policy is the bigger tool in the GOP arsenal.
Also, it doesn't matter who wins the popular vote as the electoral college will override it if they don't like the result. Nor does it matter who is voted for in primaries because the party machinery can override it if they don't like the result.
It's okay, though. It's hard to come to terms with the fact that the US isn't a democracy. One day your people will be free. Hopefully it doesn't cost what Dems and the GOP made Iraq, Libya, Vietnam, Korea, the indigenous, African slaves, etc (it's a long list), pay for their democracy and freedom.