Hi,
Kites here in Brazil are in fact very popular among kids. The funny thing is that they have seasons to play with kites that are during july and end/beggining of year when kids are on holidays of school. Neverthless, kites dont imposes such a risk to aircrafts that could lead to an accident. The reports so far about this aircraft is that it was grounded for several days on maintenance, some flights have been cancelled because of this, a friend of mine reported that a few days ago he saw this very same aircraft inside the company's hangar with mechanics doing some job on the rigth engine and today was probably his first flight after these checks. The pilot declared emergency right after take off, at first he said he was going to return to the airport landing on the opposite runway but right after that he declined and informed he was going for a forced landing on the beach.