Blockchain theorists are adamant and insistent on many features of the requirements for something to be true blockchain. Several of them are totally wrong. At least they are wrong if you want humans to use them.
It is not often that one technology or trend dominates an entire year. The internet and dotcom had a couple years like that. Facebook and social media had a year like that. And on the surface 2018 does not look to have a truly dominate tech story.