Eh, I kinda get it. For a brief time, the Mario pipes were more associated with Flappy Bird than with Mario itself. That was fine, and the game died out quickly, but if the pipes became associated with Mario's cock, or if the IKEA layout became associated with a bloodbath pvp game, those associations could easily overtake the original meanings in popular culture, and the original brands would never be the same.
I think that would be a fair price to pay for freeing our society from the shackles of pretending you can own an idea, but I get where these executives are coming from.