It doesn't matter to them. For neoliberal Democrats, even criticizing a sitting president for supporting genocide is "a support for Trump" in their twisted brains
No, not voting at all is a vote for nobody. Votes are earned, not deserved. Don't try to red herring your way out of the consequences of neoliberalism.
Voting isn't an obligation. and the few places that make it mandatory have a "none of the above" vote.