Aircraft commanders should be able to land in limiting crosswinds.
There are so many variables that this comment is redundant. Sometimes you could be landing somewhere with a 15kt x-wind and the direction and local topography make it rough as old boots and not possible to land.
I am not the best handling pilot in the world but I do like to think that I am a good Captain.
A Captain should be aware of his/her own limitations and if he/she attempts an approach but can't get in he/she should then consider a diversion, even if everybody else is managing to land. There should be no pressure on him/her to land and no admonishment for diverting.
IT IS THE ONLY WAY IN A SAFETY CULTURE.