IMO is stupid to not call Icardi because past incidents with Maaxi Lopez. In the end what matters is his football form and he is not going there to make friends or make a social life with anyone. If he is called, and he plays, his teammates should support him on the field at the very least and work as a team.
In Dybala´s case is also alien to me... well.. they have the excuse of him returing from an injury but is not even that good of a excuse..... and them not having a back up to messi , is a great chance to take dybala, at least to have him on the bench just in case the drawf gets injured.
I can undertsand them not knowing where to put dybala in the starting 11 because he is a weird player and is difficult to accomodate him even in juve... but not to take someone of his talents is bollock anyways in my eyes. To a world cup you take the best players at your disposal.. not the more lovely ones.