Yeah his celebrations are annoying... He's a weird dude. He told the French media that he somehow felt Spanish, was thinking in Spanish (remember it's Spain that gave him a chance first, not France). He declared his love for Uruguay many time. I guess he identifies with South Americans somehow.
But those who say he's less talented... I disagree. He is super important for France, he creates chances and gives the rhythm for the attack. Plus he always delivers. There is no other profile like him in the French team. Except may be Thomas Lemar.