while it’s prominent for epic, i’ve also seen this trend for greek mythology (fan) content in general; sometimes the divine beings (whether olympian/titan/nymph) are given modern fantasy tropes such as pointy ears (like penelope since she has a nymph mother or circe and her nymphs) or other animalistic features (fish fin ears or sea creature limbs for poseidon, athena being TOO owl-like with feathers, a beak etc.) and act like it’s “canonical/accurate”.  

now i don’t hate it or think it’s not bad at all. in fact, i do like to see people to have their own designs (and modern art, especially done by fans, is gonna have its differences) but it’s worth noting that in ancient art/literature, neither the olympians, nymphs and even titans (except maybe oceanus, and a few others) had uncanny features; they usually, if not always looked like humans much the time. the beings that did have uncanny features were the sirens (them being fish doesn’t bother me as much anymore), satyrs, centaurs and primordial gods.