Yes. The question tough is why would you need a single utility node at all?
Make a attribute other than string and connect it out to vsibility of each of your nodes. Whn said attribute is 0 they arent visible othrwise they are (quite oviously if you make a bolean it has true and false, tough you can make a enum for names such as visible hidden etc). Any attribute except string ones will do so you odnt even need a extra node for this.