Yes, the evidence is not absolute and those who won't listen will use such information to stop change.
Generally we will see slow change.
Teasing out whether we're fixing ourselves by cutting carbs or not smoking or using unleaded fuel is easy for us individually but as a whole country is tough.
Even if the government regs change to LCHF many will disagree, accuse them of nanny state and find non facts to carry on.
But on the good side we can change those near and dear. I believe if we try to cover up evidence that disagrees with our position then it is easier to discredit everything about LCHF.
In the U.K. recently a TV show aired where celebs went on a farm and ate high fat, complex carbs and no sugar, they did reduce weight a little. I wasn't persuaded by the benefits of the complex carbs but it's a small change in the right direction.
This study found natural food was best, sort of along paleo lines, again not what I believe but it's better than a study saying margarine and sugar is good.
With us all agreed on this the focus can move on to whether carbs are good or bad (I believe bad) this narrowing of the arguments makes it harder to muddy the narrative with other factors.
For example:, RCTs can keep everything the same except the carbs (exercise the same, types of fats and protein the same but lower carbs).
If we squabble about the detail it's easy to divide and rule. We are against a powerful food and pharma industry and decades of misinformation. The more people who go LCHF the more these opponents will feel cornered and fight dirty.
I get frustrated about the slowness but strategy is everything. This is a long battle and there will be set backs this being one. But we need to make alliances (not always with those we fully agree with) and take ground bit by bit. Based on facts and not hyperbole.