"Am I the only one wondering where the moderates went?
Or is politics just a shouting match and the loudest one wins, and that's just been more apparent to me as of late?"
That's EXACTLY what's happened. Thing is, the most vocal, most hidebound supporters of one side or another also tend to be the loudest and most active, meaning the most likely to make demands and go to the polls. The era of social media has helped produce echo chambers where people can reinforce themselves with like-minded individuals, making them bolder, more hidebound, and less likely to listen to reason since they can always withdraw to the echo chamber when challenged. Thanks to social media, compromise is a four-letter word, and we're rapidly approaching the point where cornered people will see MAD as an acceptable scenario.