You can nitpick and get pedantic on that point if you want - that doesn't change the fact that the 'conspiracy theorists' in this situation were literally pointing out all of the research on "stratospheric aersolozied injections" that indicated the government wanted to do a global experiment to block out the sun, and today they are openly admitting it using the exact same language.
I personally find it incredibly unlikely that they have done 0 research and testing on this prior to this announcement, so I find it reasonable to believe they have clearly done it in some capacity in the past which led to this wider decision. You may not agree, which is fine.
That however does not change the fact that the conspiracy theorists were at least right about the method and mode the government was planning to use to block out the sun -- the only thing you can nitpick about is whether or not it has been done in secret on some scale prior to this announcement.