> in the research team's opinion

This statement is carrying a lot of weight, and isn't properly justified.

The authors say the reason the skin gets so inflamed is the presence of all the immune cells. They then go on to say that the immune cells seem to kill potentially harmful bacteria in the area.

What is the reason they say that the body's response is problematic?

It sounds a bit like saying that the fact that our upper arms become sore after an vaccination (also immune-response related) outweighs the benefits that having vaccination has.