This diet is one that can be used for all goals. Whether you're looking to bulk, cut or maintain, it can be utilized. It's more of a lifestyle choice.
I've done it for a month and really enjoyed it. I unfortunately didn't get the benefits out of it because of my jacked up thyroid, but in the sense of eating all my meals in an 8 hour window, I love it. The first couple days take some getting used to as far as being hungry during the other hours, but it subsides pretty quickly.
I say go for it and see how it works for you.
And as for bulking or cutting, etc., it's just all about the calories and macros you put into it