Something missing to this story.
The treaty allows the observed country to provide the airplane.
Image quality may not exceed agreed thresholds.
That makes the complaints voiced in the article irrelevant.
I have been somewhat familiar with the general details of this convention. It is not perfect, but I would hate to thrash the whole thing. We get some definite benefits.
This is one for which we should pay heed to the military. This article is unclear about what they really think.
Open Skies is a useless treaty. Both sides use it for trolling above all. It is meaningless in militarily sense since space reconnaissance. It is plain fun for the Russians to fly over the White House in a military jet or for USAF to pull the same thing in Russia. No other purpose anyway.