There is only hardcore. No other mode exists. Large biomes... sometimes it drops you in a desert where there is no wood, and the only obtainable block is sand. You can't build a roof with sand. There is no way to obtain coal or charcoal, so you can't make torches to light the night sky and keep monsters at bay. No trees for kilometers. You see the beach, do you dare try swimming for it? The drowned zombies come out of nowhere, you swim too slow to dodge tridents. Maybe wood out there in some sunken ship, but wooden blocks are difficult to discern from slabs or stairs down deep. Iron, if you can figure out the correct way to get to the chest. If that chest is even there in a broken ship.
"Survival" isn't about surviving, because if you die you just respawn and go grab your stuff. There is only hardcore. "Creative" isn't about creating, because you're just wishing stuff into existence effortlessly. There is only hardcore.