If Cammalleri wants to wear #13 and other guys want to wear what I call "cocky" numbers (like 87, 75, etc) so be it. I don't see how that will ultimately correlate with success...I did like it as it was happening, but change doesn't equate to Armageddon by default.
I think they just realize a number is just a number. It doesn't have any outcome on how players perform so might as well just let them wear whatever they want.
Is Crosby cocky? Sure I would say so but I don't think it's because he wears 87 cause of his birthday. I think it's because he's good and he knows it.