The US military is interested in mapping these activities and developing countermeasures.
Information/disinformation operations have been a part of warfare since... ...forever it seems. It is - certainly - nothing new. The medium has merely changed and that's what important to the staging of the front[s], as it were.
You should pick up a copy of Eric Frank Russell's WASP[0], if you haven't read it before. It's a very good read in this area.
Sometimes, countries protect themselves using revolution in other countries. For example Lenin wanted to make the revolution in Germany, as they believed Russia was not prepared for revolution. Lenin was captured in Germany and released with the condition of not trying it again on Germany(or he would be shooted and killed) and sent to Russia, where he started the Soviet revolution.
For example, United States wanted to control the Panama channel, so they supported an "independence" movement against Colombia, so a new "free" country was created, that by "coincidence" gave the US the total control of it for a long time. Even today, the US is in control of it.
Before that, when the US felt the Spanish Empire was weak, they supported the "Cuba(and Philippines) libre" movement. People in Cuba and Philippines were very happy for the help until they realized the helpers army did not go away after the "independence". In Philippines the US exterminated over a million people, forcing everybody to speak English.
After Panama, the US continued supporting coups in other America's countries and around the world.
One of the most important movements the US supported was the popular movement in Persia, now Iran, because they wanted the British Empire to leave(so their own companies could enter and control the oil).
In the end, this movement converted Iran from secular country to a radical Islam one, and the Americans were ousted.
For the US it is routine creating havoc around the world, as the hegemonic power in the world that they are. All empires before had done that too.
They would love to be able to support popular movements in China or Russia as it is a threat for US hegemonic power in the future. Getting united China to disintegrate in several smaller countries would be a great victory.
But Chinese people already play the game.
If that message comes off abrasive it's only because I am genuinely confused, but would like to know where you're coming from. There's always a risk of us living in our little bubbles and so I make every effort to try to see things through the eyes of others, especially when I simply cannot otherwise empathize with their views on any level.
Bigger question is why in the world this would be made public. I think it's a 100% safe bet to say that the military/intelligence has been engaged in this research for many years already. I see no positive benefit to making this information public aside from preempting 'leaks' / creating preemptive PR.
[1] - https://en.wikipedia.org/wiki/COINTELPRO
[2] - https://en.wikipedia.org/wiki/FBI%E2%80%93King_suicide_lette...