Here's my non-conspiracy-theory 2 cents on why the subject isn't being discussed more:
The only coverage this subject is getting is about how this will harm producers. In reality, these stories aren't going to change public perceptions or make anyone voting in Denver care. Word needs to spread on the impact of this on the consumers. Higher costs of meat in CO, greater environmental impact of shipping in beef from out of state vs eating local, etc. People talk about the things that will harm them directly and just say "that sucks" when you tell them how it hurts you (the producer).
Now for my hot-take on the legislation that may make some people mad:
At the end of the day, our job is to produce what people want to buy. We can't just tell them they want to eat what we produce without explaining why they want us to do what we do. Losing AI/ET/Ultrasound pregnancy checks would certainly change things, but it's not like we can't produce beef without them. If anything, it would probably raise the floor price on bulls and drop the ceiling a fair bit as AI companies stop bidding and more producers buy more herd bulls. Blood preg checks and better herd bull records could sufficiently replace the preg checks--particularly with no more AI/ET programs. The minimum age for butchering, however, would be a big challenge to face. This would likely result in major structural shifts in the industry. The end results would be higher retail beef prices and more consolidation in the industry.
To make it clear, I'm not in favor of the legislation, and I'm not saying the above scenario would be pleasant. I'm just saying this isn't going to force you all into veganism.