People aren't reading Bram Stoker's Dracula en masse. Or Le Morte d'Arthur. Or Gilgamesh. These things aren't 'timeless' (unless the only meaning of timeless is 'hasn't been erased from history'). I mean, Hollywood regurgitates anything endlessly for adaptions because, hey, no copyright costs. But that's a poor definition of 'timeless'.While I think that broadly it is true that "timeless" is a marketing term, there are works that do in fact resonate no matter how far removed from their original context: The Epic of Gilgamesh, The Odyssey and The Illiad, Beowulf, Le Morte d'Arthur, Dracula, The Lord of the Rings. "Timeless" stories exist, for sure.
You can't just decide the thing you're writing is 'timeless'. So when folks like @Henadic Theologian declare that hardworking writers "want timeless, not contemporary, when will folks learn that?" it comes across as really condescending as though the poster knows the secret to writing 'timeless' epics. Like, if it were that easy, why wouldn't everybody be doing it?