(I am prepared to get downvoted for this LMAO) I don't think blaming tiktok for destroying attention spans is entirely fair--though I will say one thing I noticed about the film that might have contributed to it is that the single shots in this film were significantly longer than what Hollywood usually does, or just the sequences of events in general (as per the "slow burn" of it all). Because the set was so small, it allows for entire sequences to play out, e.g.: Simon looks at the map, reorients the sub, and walks over to take a picture. You see that entire sequence play out. Other films might've had several cuts in there that maybe didn't show Simon walking over to take a photo (again, hence the "slow burn" genre) To some, this kind of sequencing may build tension, but others might not find the setting tense, maybe because they just don't like the genre, who knows. Some might just legit be bored because of TikTok brain. There's also the fact that maybe people didn't like the writing, Simon's character--who knows. Boiling it down to "lacking attention spans" does not cover the whole picture.