TL;DRThe issue is that eating for one's athletic performance is very simple if there are no restrictions (dairy, meat, eggs, etc.). Most of these are great sources of dietary fat, protein and micronutrients that support one's performance.
As soon as these 'easy' dietary sources get removed, a person has to think a bit harder about what they're eating. Fruit and veg are great, but protein and gat is harder to come by. Nuts are a good source, sure, and so are beans (lots of starchy sugar is their downside), but things like creatine, certain classes of micronutrients (vitamins, trace elements, etc.) are harder to come by in the vegan world. The second type of problem is that protein sources from unrefined vegan food are not quite as readily useable by the body as animal protein.
It doesn't mean a vegan diet is difficult by any stretch of the imagination, but it is just not as easy to access everything an athlete would need to perform at their highest level.
This is then complicated by the more bellicose elements of the vegan community who will scream that enough protein can be had from cucumbers or whatever, and other BS that leads to very bad dietary decisions, generating stylised perceptions of vegans.
thats what i meant to say!
