This is ridicoulous what plane crashes have to do with this?
Their dynamic is completely different than a direct clash of a person since the airplane is in itself a form of protection,is the airplane who took most of the damages and apparently you didn't even bothered to read the article since you missed the fact that the poor woman had her body severely damaged because of the clash.
What you said here doesn't make sense because the dragon of Mythal is dead and shapeshifters don't heal damages when they transform and neither they nullify gravity,now i'm sure that it was a form of ridicoulous plot armor for writer pets
Gaider really did a poor job if he wrote this nonsense,if he wanted Morrigan to survive he shouldn't have allowed her to combat the other dragon,the only thing that make sense is to drink from the well and use the Mythal guardian to avoid this poor writing so she survive in a legitimate way.
This is not necessarily a writing issue. Writing can be blamed on Morrigan learning how to shape shift into a dragon in two seconds, and for Morrigan surviving while the Guardian of Mythal dies. Not how this is depicted. The plausibility problem of Morrigan surviving the impact is really an animation problem, and writers do not animate. If the team deemed it important to support the writing, which has Morrigan live, they would have done two scenes, one (for example) where the Guardian crashes into the ground, and one where Morrigan pulls up at the last minute somehow, but flies away injured. I doubt the writers scripted the dragon battle, other than stage cues like "good dragon puts up a fight, but Red Lyrium Dragon wins." The animators probably took a lot of "licenses" in interpreting that to make it look "cool."
Unfortunately, they went with only one scene, probably for budget/time reasons, and they did not see a problem with animating only one scene where a dragon slams, after being clawed repeatedly by the Red Lyrium Dragon, into the ground, but having Morrigan plausibly survive. If they had wanted to be super lazy, they could have cut off before the dragons collide into the ground, but the animators and the people who approved the scene went with the Rule of Awesome! over believability.