I say the internet is wrong and chemistry and practical experience shows the effect of salt. Salt causes Osmosis. In Fish it causes the blending of cells and in animal meats it causes water to transfer between the two.
Haha dude, how much salt do you think people are using? People are talking about grilling meat for 12 minutes here, I don't think the meat really loses anything in that small of a time period even if you used several tablespoons.