Sorry, but that's not going to fly. If Trump wins - in spite of you, and presumably others like you, not voting for Kamala Harris - you aren't going to be able to shift the blame to those who did oppose Trump, by voting for Harris.
You (anybody) would be correct in assuming that I have a certain disdain for people who choose to vote for Trump, for whatever reason. It's transparently clear what Donald Trump is: He's a rapist. He's a con man. He's a pathological liar. He's an incompetent businessman. He's a convicted felon. He's a racist. He's misogynistic. He's all of the above. If that weren't enough, he's also pretty obviously sliding into dementia.
If a voter is not absolutely repulsed by Donald Trump, I really don't see why I shouldn't hold that voter in disdain. I mean, how low is too low? How disgusting is too disgusting? How cruel, immoral, despicable does a man have to be before people refuse to support him?
How much leeway for just plain ignorance do I have to grant Trump voters, assuming that they're somehow oblivious to what the man really is? I try, because I have friends, neighbors, family members who continue to support Trump; but it's hard, because it really isn't difficult to see the reality of Trump, unless people are unwilling to see that reality.
You like to criticize Kamala Harris. But the reality is, she's qualified to be President. She's served as vice president, as a US Senator, as a state Attorney General, as a District Attorney. She's not a raving lunatic. She's not a communist. Is she perfect? No, she's not. She wasn't my first choice in 2020 (neither was Joe Biden, for what that's worth). But she is educated, experienced, sane. She is the only viable candidate in this contest who meets those criteria. This is (or should be) a no-brainer.