A Snickers bar has 27g of sugar in it[1], almost 3 times the 10g in the 'average apple' (without the fiber or water to slow down metabolizing it). I haven't encountered anyone claiming that obesity and diabetes are rampant in the US due to over-consumption of fruit (though fruit juice is not doing us any favors).

1: https://www.myfooddiary.com/foods/22930/snickers-regular-siz...