I feel like the 2010s are the first decade in 100 years that doesn't have a recognizable aesthetic or vibe.
Every decade since the Roaring Twenties had its own recognizable culture, visual aesthetic, music and so on. In the 2010s, the Internet allowed us to become cultural omnivores. It's good that everybody had access to whatever niche subculture they enjoy but it also meant that there was no more monoculture that we all shared.
Take off the nostalgia goggles. Every decade has different aesthetics, you just don't notice the changes while they're happening. Nor do they perfectly line up to nice, round numbers. 1981 looked a lot like 1978, while 1986 very clearly had that 80s vibe the 80s were known for. The late 90s had a lot in common with the early 2000s to the point we were saying the same things back then. Then 2010s going on into the 2020s may not seem like they had a particular style, but they do and we won't know it until it's 2045.
I think a lot about the music of this era. The 2010s had a large amount of influence from dubstep, drone, and other club genres. Bass drops became more popular between 2012 and now. Billie Ellish, for example, is a pop artist that has more in common with Suuns than she does Katie Perry. Years from now, people will be able to pick out songs from 2017 based solely on their style the same way you can tell something was made in 2007 or 1977.
Yeah trap music is a good example shit was everywhere for a while.
Indie sleaze is another.
Mumblecore movies.
"Prestige TV" literally ongoing.