I am on a bit different opinion than the others, it depends on the bird WHEN will you keep a sleeping hut/tube.
I am against happy fuzzy huts, instead I use a big carton tube layered with some yuta fabric which is natural, so if my Pascal wants to chew on his sleeping place, he can do it freely without fear of ingestion of fabric and stuff.
When it comes to hormonal issues, this is something you need to see and follow, if the bird uses the tube/natural hut ONLY for sleeping, that's ok, you can keep it. As soon the bird is spending time during day in the hut, remove it. What you can do is put in the hut/tube back into the cage only for sleeping. My Pascal will only sleep in his little tube, I have never seen him spending his day there. Like, ever. If he starts doing it, he will get the tube in the evening right before sleep, problem solved.
Another natural way to make a hut can be out of seagrass mats - I have seen many people making the huts out of it, plus it is kind of see-through so it should discourage the hormonal behaviour too as it doesn't give too much privacy, but is, well...snuggly enough.
That being said, I love seeing Pascal just scurrying into his little tube as soon the lights are off, he's all like "oh, night night time!" and goes immediately into the tube and waits me to cover him.