It reminds me of a problem with Japanese let’s players, how they’ve been playing more and more Western games lately, who have been playing Grand Theft Auto V.
See in Japanese culture, onomatopoeia is a bigger thing, and it’s not uncommon for people to sing an onomatopoeia or for them to be accounted for in the dialogue for media, especially in anime.
So a notice actually had to be given to Japanese Grand Theft Auto fans to stop playfully singing the N Word (as is done at the end of the infamous Franklin Roast)
Many fans mistook it for a playful onomatopoeia and just began singing it on stream in the most innocent way possible.
There are compilations of famous Japanese Vtubers doing this and it is as adorable as it is uncomfortable