Or perhaps it is genuinely useful?
Music is an interest of mine, but not an active obsession. I've learned songs I want to play only through tabs, because every time I attempted to learn sheet music online, I ran away out of the fear of the heavy fog that exists in most descriptions about sheet music. Not to mention insufferable smugness, much like wine and craft beer snobs, about how sheet music is superior.
This guy, on the other hand, kept my attention, and described it in a way that I honestly found worth my time. I read the whole thing without wanting to switch tabs or multitask.