Au contraire. I am anything but defeatist. I will do all in my power to see that Trump is evicted from the White House. (After which it should be cleaned by a hazmat crew.) But that aim does not motivate me to spend energy on efforts that promise little chance of success, and may well strengthen him. And impeachment, at this stage, is such an effort.
Total effort to rid us of Donald Trump does not mean using any tactic, any weapon that may come to hand. That would be the path of desperation. We’re smarter than he and his allies are, right? Then let’s fight hard, and fight smart.