On the scale of evil things in the world, modifying ~10 minutes of a popular fantasy movie does not rank highly. The implication is scary, but the act itself is profoundly unimportant.
Is it relatively as important as the looming threat of climate change? No.
Is it, in absolute terms, still a very important concern worth addressing at some point? Sure.
We should start addressing it now. We can work on more than one problem as a species, and moreover, we should. The big problems never stop coming, so focusing 100% of our energies on that means that the smaller problems won’t get solved.