We're trained to do what our leaders say, and to not question them - yet our leaders don't have the answers. When they point to scientists, half of our country refuses to believe them (anti-intellectual) and then half of what's left blindly follow the authoritarians who are in charge who also are anti-intellectual.
Rational, intelligent people would understand that science is a PROCESS. It changes. Best practices are different based upon the knowledge we have. However, we have an entire political party devoted to consistently moving in lockstep and refusing to ever make changes (authoritarianism again!) which refuses to ever back down.
Until compromise comes back and our politicians are willing to work with each other instead of hold tight to ideology/bias, things won't get any better.