"If you chose not to decide, you still have made a choice". the difference is I can generally stand by my decision, without having to rationalize a party telling me what to do. I am willing to bet I spend more time actually looking into the candidates than 99% of Americans. I have more research, reason, and internally consistent arguments to support my choice.
and sure I do. just as much as anyone who voted for one candidate criticizes a different candidate. You didn't vote for Biden, so why do you criticize other people's votes for him? in your argument the only critics of Trump would be people who voted for Trump, and that simply isn't the case, and I doubt you want to argue it.