Other conservative senators need to do this more often. In fact, if one can last 21 hours like Ted Cruz, it's BETTER than a filibuster, because there IS a deadline, which is about as long as a senator's physical ability lasts, and he will not have to endure the "quitting" label because he will be shut down procedurally.
We should be doing this weekly, if not bi-weekly. This is PRECISELY what a politician needs to do to get past the filter of the media, without having to pay for his own advertising.