I don't know. I'm not sure it's reasonable for a game developer to expect players to normally be looking at dead bodies within reaching distance and trying to reload at the same time
I'm pretty sure it's not reasonable to map interact buttons over the reload button and then hardcode these interact buttons in to prevent remapping. Reload has always been R in every FPS and for me to change it to something else pretty much defies everything FPS games have been doing for years now. The interact button is the one that needs to be changed.
I have never once seen a gameplay mechanic overlap the reload button before, this is the first.