No it’s not. There’s more than two presidential candidates.

Maybe I should have been clearer. There are only two candidates with any realistic prospect of winning the election, and only one position to fill. There are many representatives and senators, so their individual contribution to the whole is less. The president is the head of the executive and isn't diluted in the same way.

And you can (and in some cases do) argue that anything short of voting for, capmapigning for, donating to, and never ever showing any disatisfaction with the Democrats qualifies as this. Why stop at withholding your vote? Or campaigning for change ‘at the wrong time’? Have you been door knocking and phone banking for Biden? If not, why not? If you have, why aren’t you doing it now, and in every spare moment, or quitting your job to do it full time? Have you donated every cent you own to the Democratic party? What about selling any property or other assets you have? Aren’t you part of the problem?

You're reading things I haven't said, so I can't really answer that.