Dean Phillips is not "right-leaning". He is a full-fledged Democrat and voted like a full-fledged Democrat. Like Harris, you are too often unprepared to think on your feet and address a competent argument.
Harris does relatively well when prepared, such as was the case with the debate. But when thinking on her feet, she is terrible! And she too often did NOT prepare for questions she had to know were coming. That's incompetence. You choose to see her when she's (infrequently) at her best, and ignore her worst. She can't commit to the slightest controversial side of an issue, with the exception of abortion, because she constantly panders to both factions of her messed up party. No one knows what she truly believes in. All of this is demonstration of incompetence.
While Trump is way too often unreasonable, he has certainly demonstrated competence. Hating him does not disqualify his competence. His administration targeted Roe v Wade, and as a result of his administration, Roe v Wade is now dead. Like it or not, THAT was a demonstration of competence. Extraordinarily important issues, such as his economy, his border, and his impact on foreign affairs was better than Biden's, and Harris agreed with everything Biden did. Not just during, but even right up to this election. You, and so many like you, ignored that prior to the election, and that fact, in large part, cost you the election.
Incompetence, within the Democrat party and with Harris herself is why she lost. No one has made a remotely decent argument that suggests otherwise. Certainly not here, and not across all media either. Asserting all sorts of other reasons, derived from feelings instead of evidence, won't get it done.