Doesn't mean you have to make it exactly like that on a piece of board! If I'd only shown the circuit diagram then the thought of safety wouldn't have entered your mind.
What if the one you're thinking about had been mounted on a piece of wood would you reject that?
The Lampizator has the advantage of being simpler and not needing a second power supply for the ....
err whatever the batteries are for. AND what I like about Lampizator is that he does things in his very "it's so simple! Just do it like this on a piece of board and stop fussing and putting up barriers about having a case and everything being OCD perfect.. Just do it!" attitude. That appeals to me.