I use it and do find it useful. The decorative aspects of the journal keep me engaged. That is, if I spend five minutes doodling or drawing lines and bullets, my mind is occupied with what's on the page. Whereas a digital todo list or calendar, it takes only a second to add a new item and then it's discarded from memory.
My advice, just give it a try. A pen and a notebook is a pretty small investment. My journal looks nothing like the ones on YouTube.
I am using it at the moment. Writing down monthly goals is helping me a ton in terms of focus and productivity!