I think that Congolese artists were snitched eachother because that ngulu-phenonenon started in already in the 80's. But yeah they started to exagerate because first they were bringing only close friends, family and staffmembers. But then it became a real busniess from the mid 90s with them bringing 50, 70 people and Chef d'Orchestre, Staffmembers and main stars of the band also putting their people on the tour list with also ading their shegues who were supporting them, saying rivals and doing nasty jobs from them. Some bandleaders were scamming people. Which led to many problems so was Nyoka Longo arrested in 2002 after his Zenith and wasn't able to return until 2009, because that a man sued him in Kinshasa. Werrason who was arrested in 2002, after that a woman sued hi, but he was so lucky and was after that not able to get visa's 2 years. Bozi Boziana who was arrested in 2001. It also led indirectly for the combattans, which started in 2006.