Stupid analogies are stupid.
Analogies people don't like they will often characterize as "stupid."
I think you need to look at the bigger picture. If only the voices of liberals may be heard, then they will use this power to marginalize conservatives. Conservatives will become second class citizens, and they will be marginalized.
The Jews are an example of this happening before in history, and everyone is familiar with it. Had there been other voices to oppose Hitler, he never would have acquired the power he acquired. Of course he took immediate steps to insure that no opposition opinion was ever allowed to reach the German people.
Most dictators do this.
Google is left wing. It is inherently socialist/fascist, and if we continue allowing it to get away with censoring public speech, our movement will continue losing power and influence until the point it is safe to attack us without repercussions.