How does it muddle the waters? People are saying "no big deal I expect my agency to defend me from foreign threats", and it turns out they have been used against domestic do-gooders.
I think it makes an unwarranted (ha!) connection between the current released documents that do not indicate they were used against US citizens, and a previous probed and documented illegal act by the CIA. Not a justification for their previous behavior, more of drawing solid lines between two ideas, where maybe a dash is better fitted.