Though it does not fit Inquisition - any Dragoncultist or even an occasional "Druids" (or nature loving human) or Keeper might empathize with the dragon over any humans.
Again, that's not this game. As far as I'm aware, the Inquisition can side with the dragons.
However, if it can...
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We also don't have ANY real world analogues to dragons (I hope this is obvious).
When a shark kills a man - quite often the response (well, my response at least) is: "Dummy shouldn't be in the ocean." It sucks and I'm not at home secretly praying that sharks rise up and take down man's beach vacation hotspots... but I don't "fault" the shark, I fault the human (and so do many people who become objects of such attacks. They know full well they're the intruder.)
This dragon is in direct competition. It's babies will be in direct competition. And in a way no real animal could ever be to humans.
Killing hundreds, if not thousands, of humans in a whirlwind of slaughter should also be considered depopulation.
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Unless, of course, we're simply discussing out desire to be Dragon Cultists.
Siding with the dragons "would" be a very cool option...