Only tangentially related.
I occasionally fall asleep to either a movie / TV episode on repeat in a media player on the PC in my bedroom, or a YouTube short which repeats.
The audio almost always gets integrated in to my dreams, and almost always in a highly entertaining and humours way.
Anyways, I feel I sleep better when there is background sound, even if it’s other people (quietly) partying in the house.
I'm with you. The way I deal with insomnia is to pretend I'm sleeping in a noisy environment. For example an apartment under a elevator highway or a cot behind a bunch of refrigerators. Or even in a tent on a lively beach.
Don't know why but it works great.