It could be because the Challenger as we know it now in its current configuration is going away after 2023. Therefore replacement body panels will bet harder to get.These types of posts are hard to answer. I am not sure why you would ask a people on the internet this question - I am beginning to think its just Challenger owners. I do not see these types of questions on the RAM HD truck forums(does this comment make me a "keyboard warrior?).
There are so many variables to these it is hard to say - from a general cursory look its fixable.
Let your insurance figure it out.
If the RAM trucks continue, then it would not perhaps apply to getting them repaired.