English contains a veritable shitload of loanwords as well.

But you’re not wrong when you think they’re trying to be cool. You’ll hear this most often in hiphop, which started in English and not every language lends itself to rap. So they throw in an f-bomb here or there. Imitation is the highest form of flattery type stuff.

Also, English is the most commonly learned foreign language on this planet. A lot of contemporary music genres came out of North America. I would say internet culture is most pervasive in English as well. A lot of tech jargon becomes English loanwords in other languages. There are reasons beyond wanting to sound cool as well.