In the grand democratic tradition, Scalise brought his case to the people. If you disagree with his proposals, bring your own case to the people; it is as simple as that. The audience who heard Scalise's speech is irrelevant to the merits of the speech.
These ad hominem, guilt-by-association tactics really grate on me. And even if the Left is not going to conduct themselves with intellectual integrity, we should.
As a literary man, I would like to see a literature of greater intellectual integrity. In my most recent Radix essay, I argue for a new "Classical" ideal as a means to this end. Hopefully, my own book lives up to these principles.