I have been a scientist in my career and worked in scientific areas for decades, with and among many other scientists.
Science is excellent.
But --
People who don't work in science tend to think that science is pure and that scientists always work in a scientific way.
Yet science has plenty of politics, empire building, massaging data, competing groups that dogmatically adhere to their group's theories and undermine the opposition, cliquish behavior of "in groups" and "out groups" with respect to publication, funding, getting academic positions, etc. It's not all like that, of course, but some is.
The good thing is that, despite science being done by humans and having some of those imperfections, over enough time, science tends to give us increasingly better understandings and estimates. But there can be detours in the shorter term.