But isn't the OP trying to say that the location of the IFE box is what caused her to have her knee protruding into the aisle? She seems to be claiming design problems caused her to be in the way and, ultimately, sustain an injury. However, the problem with this is how many people sit in a seat just like the one she was in every day and have no problems?

The CC could have been more tactful, for sure, and that poor response could be reported just so the CC might realize there are better ways to interact with pax.