Although many bracycephalic breeds such as Frenchies have been over bred irresponsibly by greedy backyard breeders due to their popularity amongst celebrities, it should not be assumed that breathing issues affect animals bought from a reputable breeder.
There is no evidence to suggest that Kokito suffered from significant breathing issues; videos show him to have been a healthy, happy and playful little chap rather than a dog who suffered from such problems.
He was not 'a toy from one of those mis-bred breeds', as Dairyground suggests, he was a much-loved member of the family. He is more likely to have died from deprivation anxiety and stress than from lack of oxygen.
Personally I consider that Sr. Oscar Munoz himself should go and see Catalina Robledo and offer to provide Sophia Ceballas with another French Bulldog puppy - from a reputable breeder.