I'd usually agree. I don't think the LEC legal department will really care what we're doing here (though, you never know). However, this time it's not about LEC.
People put quite some money into a contest here. A contest they are judging themselves. I just don't want people to start disqualifying solid levels because someone used copyrighted content carelessly.
I know I wouldn't want that to happen to my work, nor do I want that to happen to anyone else's. For that reason I think it's important to raise awareness.
But maybe that's just me expecting the worst in people...