It's not that "having accurate reads" is unimportant, it's that I feel like people often over-emphasize this one thing at the expense of other crucial aspects of gameplay. A common gripe I see from folks is something like, "my reads were correct but no one would listen." Getting people to listen is an important skill to have too. Everyone is trying to pinpoint their own reads, and so naturally some people will be more right than others. Creating and sustaining an environment where the "correct" reads are able to be brought to the surface for many matters about as much as being able to (individually) identify those correct reads in the first place.
Basically it's a game that relies to a great extent on communication, so simply having the answers alone isn't the recipe for a victory. You need to be able to get the answers and have enough of your team members agree with those answers to win as town.
Then there are things like testing those reads, being open to reassessment and alternatives, etc. This all fits under the umbrella of "communication", I guess. If your reads are correct, they should be able to hold up when tested, so you should usually be willing to test them.
Speaking personally, I try to put much more emphasis on creating an environment where everyone's voice is heard and my own reads are fluid than on "being right", especially in early games. I've seen people in the past hold back from putting their ideas into the thread for fear of "being wrong", and that just strikes me as counterintuitive. You gotta start somewhere.