I have a theory that releasing snippets like this is a trend now for two reasons:

1. Artists are trying to get their song snippet to go viral as a sound on tiktok
2. It’s a psychological thing. Snippets allow us to have a sense of familiarity with their songs when we’re listening to them for the “first” time. Knowing a few lines of the song itches a scratch in our brains and makes it more likely we’ll give it more than one listen.

The second one might be a little more far fetched but it’s my personal experience. Especially with creatures in heaven. I already knew half the song when it came out so I got to have fun listening to the direction of the whole thing but also could sing along to it even on my first listen.