I'm on the fence about it. On the one hand, the memes (at least the ones I've seen) were heavily influenced by the article in The Atlantic a week ago about orcas attacking yachts, tapping into the justified vein of resentment against out-of-touch billionaires - a label which can apply to three of those on board the Titan. The fact that these people paid $250,000 each to go down and sit near a shipwreck that they couldn't see (portholes would be a dangerous pressure-point) instead of using that money to actually benefit humanity in a time of widespread hardship is questionable at best - and what does the company they gave this money to spend those millions of dollars on? Obviously not quality-controlled safety tests.
On the other hand, there is the human dimension of the teenage son who was terrified about the trip and only went as a Father's Day bonding experience with his rich dad, or the French naval expert who was genuinely knowledgeable about the Titanic and had recovered many artifacts from the wreck over his life, which represents a genuine loss of expertise.
So I smile when I see the pic of orcas banging pans and saying "billionaires, it's safe to dive now!" But I don't go out of my way to find those memes or exult over the deaths.
And apparently it is adult-themed and explores millennial angst and disenchantment, because reasons. Yes, really.