Is the argument now that the US does this, but that it isn't effective?
I made no claims of particular effectiveness (god knows such efforts have failed - check the Arab Spring), but I'd paint your comment with the bullshit bluster hue before I would Stratfor...
To be more substantive: those with appropriately high levels of interest and low levels of cognitive dissonance can research the history of US spy agencies and their role in winning the First Cold War, of its partnerships with the UK and other nations known for having incredible espionage, to Snowden leaks to see a small fraction of its capabilities, as well as browse Wikileaks files to get more information on the effectiveness of spying operations. Of course they can and should also look at the source documents in question and determine for themselves whether they think the claims are bluster.
I don't think they need to - the larger point that the US is involved in covert regime change in the parent stands - no matter how ineffective you would like to paint it. But if they wanted to understand the relationship between Stratfor and the US intelligence community and the size, budget, role and effectiveness they can - they can also find very good overviews of covert US foreign regime change actions in the last decade and history online. :)
Here's a podcast from a State Department official who discusses some of the more overt (but still on the sly) operations done to start movements opposed to anti-American narratives in the middle east, and them pass them off to the private sector (so called Civil Society).
"In a way its flooding the marketplace with narratives that are 'cool' enough to attract young people... you use voices that are credible but you use images, the music, the sounds, the feel that are modern..."
"The US State Department now has this program to kind of flood social media with counter messages... this center is nothing new... variations have been done since the Bush administration... we also know that the experts in this are not in Washington - they are in Silicon Valley, they are in New York and in Banglor - all of these areas of high tech..."
And others...
http://csis.org/multimedia/combating-violent-extremism
And a DoD program to manufacture Twitter messages based on brain scans of test subjects before they are flooded into the Middle East: http://minerva.dtic.mil/doc/samplewp-Lieberman.pdf
A twitter messaging platform used to try to kindle revolution in Cuba: http://www.washingtonpost.com/lifestyle/style/usaid-effort-t...
So out of curiousity do you have inside information on why all of this activity isn't effective - more information than Stratfor and a company that has been active and claims success in dozens of countries - or is it more of an opinion?