It’s pretty well established that masking lowers educational achievement for school children. If all the children learn very little, there will be less “inequity” in outcomes by race. Therefore, masking good.
The authors of the “study” need psychiatric help. In the mean time they should be called out, shamed, and laughed out of the medical/academic arena.
I took a quick look at the authors of the paper. They are all women and possibly a man.