It's perfectly fine when our understanding of something evolves and we discover that what seemed like a good idea with the information we had before looks like

It's perfectly fine when our understanding of something evolves and we discover that what seemed like a good idea with the information we had before looks like a bad idea with the more complete information we have now. There's nothing better than using the best evidence available at the time to draw conclusions. Where there's a problem it's when corporations and industries manipulate research until they get favorable results, and bury any evidence unfavorable to their products or when even well-intentioned research is distorted by the media just for clicks. We should expect science to change in the face of new information, that's a feature not a bug. We should be doing a lot more to hold people accountable for lying and misleading us though, including researchers and the media.