Yeah, approximately 150 000 people die every day - approximately here means that plus or minus 1500 is absolutely meaningless in the grand scheme of things, especially when we're talking 100 years ago. Also, 3000 people die in car accidents every day, so even the fact those 1500 people, who don't (or shouldn't) personally mean anything to any mentally healthy person today, didn't die of natural causes, doesn't really make it any more meaningful.
I'd be willing to bet that thousands of people died during the building of the great pyramid of Giza and I doubt that anyone would object to a slide in a shape of an Egyptian pyramid. And to me, the fact that that was thousands of years ago doesn't make any difference, because no one who lives today has any personal memory of anyone who died on Titanic, just like no one today has any personal memory of anyone who died while building the great pyramids.