You do not understand the US primary system.

People are driven by the genocide of the Palestinians to stop it. The title is jarring, divisive, and highly critical on purpose: 30,000+ Palestinian civilians are dead and counting. Biden has not done enough to end the genocide that the US enables, hence he is targeted by this me-me.

The uncommitted vote in the 2nd term incumbent US Democrat primary, which this me-me depicts, is a safe way to draw attention to the significant need for the US to exercise its power and end the genocide. Biden is not running against anyone with credible support, he will sweep the nomination guaranteed as he is a popular president.

There is no credible call to not vote for Biden in the general. If you see such a call, that is actually republican astroturfing or Russian bots at work. Anyone sane and rational is well aware the fascist republicans are worse, even if Biden does not act to end the genocide - as the fascists have already said they would “complete the mission”.