In conflict zones, the red cross symbol has often protected them from being a target. It might have been one of the primary meanings and uses of the symbol. Could they mean, with those two sentences, that having the red cross be used, in for example, video games, for other meanings (like health pack or whatever) waters down that original important meaning of the symbol as the Red Cross organisation identity?
I’m just speculating, but could it be that a combatant in war seeing a red cross previously though “that’s the Red Cross” while they today might, more often than before, just think: “that’s medics”?