I don't really know where to start with this bulking/cutting myth, yes it's a myth no doubt.
Who does tbe bulking and cutting? Yep, professional/competing bodybuilders, they'll reduce calories LEADING UP TO A SHOW so they will be more defined and therefore they can be judged according to the competition's criteria ON A PARTICULAR DAY.
Now it's no secret that the one's who may benefit more from this approach are drug taking professional/competing bodybuilders, once tbe competition is over some will go back to eating like they do normally which is still healthful and sensible while other lazy bastards, usually huge ifbb pros for instance , will go on an eating rampage mainly because they can but also because they are taking a cocktail of chemical enhancement, something that a truly natural competitor cannot get away with and certainly not you or I.
if you're a competing bodybuilder and you have to get in condition for a particular competition on a particular date, then sure, you have to reduce calories to to appear defined to be competitive.
However, amateur, recreational lifting (that counts all of us here) is about a lifestyle which includes what and how we eat each and every day, it's not about fucking dieting, cutting or fucken bulking, which is the dumbest thing you could do, it's no different than the stupid girls who get sucked into the latest fad diet, you know, the ones you laugh at.