There is not enough done on intermittent fasting as an approach to be able to say if it works as well or better than traditional “diet” approaches (e.g. caloric restriction). If some version of intermittent fasting appeals to you stylistically (and it does to some, while others would see it as horrific) then it is reasonable to give it a try.
Visceral fat (not the fat outside your muscle wall over your belly, but the stuff on the inside, around your intenstines and such) does come off preferentially with exercise, especially higher intensity exercise, and is not especially stubborn.
The pinchable fat above your beltline? That is pretty damn stubborn stuff and probably won’t come off until you have gotten to a pretty damn low body fat percentage. For many that is the last fat to go. To the best of my knowledge you cannot target it short of with liposuction. OTOH from the health perspective the stubborn bits of superficial subcutaneous fat are pretty much inconsequential.