I find that so-called street photography has the propensity to draw even more pretentious claims for itself than art photography. Maybe art photographers are a more sophisticated lot: they realise the fragility of the ground they tread, smile when they are ahead and stay shtum on the inner workings of their minds, playing that down and shrouding it in smiles...
After a long connection with photography, I conclude that one's best moments come from technical preparedness, which means a little bit of understanding of how to set up the machine, and one helluva lot of good luck. Without the good fortune, there's nothing. And I don't care who you think you are: it's the ground rule of the game.
If you spend the required time paying your dues to those Atlases of the past, you won't find one who doesn't admit to the factor of luck. Genius can afford to be modest.
Rob