Getting their base energized and angry about the current situation is doing a lot more than introducing a bill that has a 0.00% chance of getting passed. The chances of them talking to the high ranking party officials and getting them to reverse course probably has the same chance of success.
It helps to use your brain to actually think about the outcomes of actions. On the off chance that I'm just being an asshole, please let me know what is a better use of their time.
That poor Bill, brought into the world because @MisterOwl thinks it's better to have a useless, irrelevant stack of paper then to start solidifying a base of people to act as the real opposition party.