I would not go so far to say pinteresque card design for everyone but most of everything else is fairly accurate.

In the same way Google pushes Material Design, so does this platform for its signature card-like content boxes. It provides an excellent solution for responsive websites as it rearranges easily.

Yes, I agree with U. It's a best guideline for create unique Web Design in WordPress.

These aren't strictly WordPress trends; WordPress is, of course, just a CMS. Also, they may be trends, but not necessarily good practice. I, for one, despise the single-page layout trend where you scroll instead of clicking; it's a trend so many companies mindlessly adopt, thinking "modern" equals "better". Often the obligatory animations are, in fact, much slower than simply loading a new page, and there's usually much less information to be found on such pages. You always need to find a middle ground, where you can adopt modern practices while retaining or improving the user experience. As goodroi notes, these trends aren't for everyone. You have to see what works best on a per-website basis.