A lot if thus stuff had been out there. Many of us paid attention right from the beginning.
Just as an aside/FWIW:
The most frustrating thing I have found when being active in politics/political related issues is that there is always a small group of people that do their research and know the issue. There's always a portion more that are generally semi informed but aren't versed in the issue and the majority that are either unaware of it or openly hostile to your position.
The semi informed group will get up to speed pretty quickly once presented with info or at least direction to find their own. The problem comes in as more people, IE regular non political animal types, learn about it. That problem being that they come in at different times and those with knowledge have to start from scratch, This is why you see some topics being brought up time and time again when one would think everyone 'knew'.
Nothing special there either as thats the way of the world with any knowledge. It's just the process.
UNFORTUNATELY, those openly hostile to a given topic, those on the other team, take advantage of this extensively, to obfuscate the given issue. Everything from the simple 'Old news' excuse to outright lying about the facts involved. We see that as the chosen mode employed by Trump supporters frequently. And thats why you often find yourself repeating the very same arguments with the very same people you know you've done this with before.
What most people don't realize is that it's a tried and true leftist tactic. The intent is twofold. 1: to wear you down and goad you into mistakes which they immediately capitalize on by 'proving' you to have said 'one thing one min, and something else the next. Which hits at your honesty and credibility on the issue and 2: to make people so sick of hearing it they shut the issue out completely.
If you go back through this or ANY political outlet on the web, you'll see that pattern repeat.