Have you tried calling their phones? Sure some don’t pick up, but enough do.
I’m in favor of larger structural changes, but I’m not about to roll over and allow fascists to get everything they want in the current system. How many people do you expect to join a revolution if they won’t even be bothered to pick up a phone?
It’s highly variable, and yes I absolutely agree money in politics is a big problem. I do have a direct experience where reaching out to my Senators led to them aggressively and successfully opposing a provision in a law that would have had a big impact on me. Don’t want to dox myself, but this real change to a bill made a huge difference to me and many others. So it is possible to make an impact.
Call your Senators and briefly tell them what you think about this nomination. Say your name, city or ZIP code, and a brief message about your stance. Senate offices do pay attention to how many constituents are calling them on a topic. Democracy doesn’t end at the ballot box.