Pasha, I do not think lkatherine intended to point fingers to any particular photographers.
If you really think that you did not disturb the bird, you can just calmly say so.
Honestly, I think that the villagers are actually more caring to the drongo than the photographers - as you have pointed out they cared for the growth of the chicks.
There is no need to become all defensive at such a small issue - people will only become even more suspicious of you if you do.