They all said it well. The entire reason that bulking/cutting works is because the two phases have time to actually take effect.
I also advise you to consider the alternative to bulking/cutting: just getting steady, progressive gains. There's been a lot of research recently going against the concept of bulking/cutting.
For instance, you bulk and put on 2lbs. fat and 2lbs. muscle. Then you cut and lose 1lbs. fat and 0.5lbs. muscle. Net gain: 1lbs. fat and 1.5lbs. muscle.
Or, you go for the progressive approach and, over the same amount of time as both bulking AND cutting, put on 0.5lbs. fat and 1.5lbs. muscle.
I play Ultimate, where you want to be as light as possible. And I don't think many people enjoy gaining fat. But there are sports where just about any weight gain is good weight gain. That could be you.
I tried bulking and cutting for the past couple years, and it didn't really work out for me. Then I read a little bit online, and tried the constant approach this year, and I'm happier with it. I can imagine it would work better for some people and worse for others though, and you might find yourself at a plateau you can't shake with a constant routine. I do suggest you read about it at the very least though.