Why do jype like to spoil the chorus in their teasers?

Fans always get frustrated with jype because of this but they keep doing it. Even the singers have talked about jype spoiling the song too much in teasers. What’s the reason for jype to keep spoiling the chorus?

I think a little mystery to the song doesn’t hurt and keeps the audience intrigued.

Yeah imo instrumentals + song name is enough. Their poorly execute their album samplers all the time.

They want the teaser to be catchy

The chorus is the most important part in songs, so they think spoiling it in advance will attract more people to it before the release, that will help in case they don't like the whole song cause having the chorus stuck will make people to hear the song for the chorus several times until they got actually stuck to the whole thing