Not entirely no, I didn’t see any news outlet leading the story with “5 Billionaires missing after Submersible lost contact”. For quite some time we didn’t even know who was on board. It’s more the fact that boats in the Mediterranean sink all the time, it’s still tragic but we know that that’s an issue we have now (most people unfortunately seem to have decided that they do not care that much). A submersible going missing and the coast guards of 2 countries looking for them, while thei only have air for a couple days, no one knowing where they are and it involving the titanic guarantees clicks, it’s almost like a movie plot. The fact that they are wealthy is certainly not the reason for it though, it’s the circumstances surrounding it, it’s unusual. People also know how ships work and why they capsize, while most people don’t have the slightest idea how deep sea submersibles work.
So yes, the ship capsizing and killing that many people is horrible and should get more attention, especially from the Goverments involved. It’s ridiculous that we let those poor people drown by the thousands and treat the ones who made it like scum. But I’m not convinced the Titanic story got traction BECAUSE the victims have money.