I'm gonna disagree here. The impeachment resolution was a dumb idea, and should not have been introduced. It was never going to be successful. The more impeachment resolutions are introduced and fail, either in the house or Senate, the less likely they are to ever succeed. It looks more like boring partisan messaging, and less like an extraordinary situation. Introducing this resolution makes it less likely that Trump will be removed from office, not more.
I'm not going to take a position on whether it was a good idea to vote against it, that's more debatable, but as a message to their fellow Democrats they are right that the resolution was a terrible idea.