I would say that the initial learning curve is the only steep hill here, when you need to open the survival guide every other step and basically before you get clay.
That's where the rough wilderness survival really only exists if you ask me... as soon as you reach the pottery age then you no longer get hungry as often and can already store food for long times. I went into the game blind the first time and my first couple of hours of learning were an exciting mess, but as you make progress and technology, yeah the challenge goes away.
That's why when I had to start a new world due to the update that changed traders a little while ago (I've had about 200-ish hours of playtime at that point shared trough my solo world and the one I play with my friend), I decided to make the next world with a few more realistic settings.
I made it so that I get cold when it's below 10 degrees C, made my tools have more durability... and a few more things. It hasn't impacted my experience much, but I have noticed that on longer exploration runs during winter, especially if night catches me, I will start getting cold, and I refuse to just dig myself into a 2x2 dirt pit and light a fire to get warm, I'll either get home or to a checkpoint with a fire, get into a cave and light a fire there or just make one wherever I need it (unless it's too windy or raining).
So although I understand that it's not as hardcore as it might should have been, you can make the world more unforgiving when making a new one. If that's what you're looking for, you're able to make it here!