Until I saw a major exhibition of his work at Arles a few years ago, I used to subscribe to the widely held view that he was a genius. Then I realized that I had mostly seen the same carefully selected pictures again and again, in books and magazine articles, and that a much closer appreciation would be that he was a financially overprivileged amateur whose passion for photography far exceeded his talent. His reputation was much enhanced by the glimpse he gave of the extremely rich at a time of great inequality: the Downton Abbey effect.
His great pictures (and some of them are great) were to a large extent a result of the law of averages: take enough pictures, and you need to be REALLY incompetent and unadventurous if you cannot take a few good ones.
For me, he is one of the most wildly overrated photographers in the world; and I say this as an ex-fan, not as someone who never "got" his pictures.
Cheers,
R.