I'd say a lot of it is cultural as well as the obvious factor of the MSM and constant online access.
The post-2008 era has been one that is culturally bleak and full of malaise. It's not edgy like the 90's or early 2000's were, quite the contrary, but it is a culture of malaise, both in terms of pop culture and in the social sense. Even the pop culture that is meant to be lighthearted is bland, sanitized, and corporate while simultaneously preachy and propagandizing.
While you always had bland corporate product culture and preachy media and you always will, it's most blatant and brazen in the 2010's because of how social media has integrated itself into the culture.
You've got doomers of various stripes, even on the dominant Left there is a sense of gloom and doom thanks to the hyper-politicization of environmentalism and the overall polarized culture.
You have these eras every so often in history. The 1930's had a similar feel because of the Great Depression, and Europe in the 1920's was similarly wrecked culturally because of how traumatic World War I was for both sides.
Hell, you even saw some of this going on in the 1970's because of the recessions and the oil crisis alongside the high crime rate at the time. The 1970's weren't quite as bleak as the 1930's and weren't quite as moralistic as the 2010's, but when you look back at a lot of the media, culture, commentaries, and writings from the time, there's a sense of malaise and doom in a lot of people's minds, partly because of the economic woes and the shock of losing Vietnam still being fresh in many American minds.
Then you have your stereotypical "feel good" eras like the 1950's, 1990's, and 1980's. These things often run in cycles and the 2020's have just started chronologically, and we're still culturally in the late 2010's "Current Year" mindset.
A lot can happen in the future. I don't know if things will get better or get worse, but I do know that we're not going to be stuck in the malaise of "Current Year" forever.
Whether or not it will be better than the 2010's or somehow exponentially worse is anyone's guess at this point. Don't go reaching for that bottle of black pills just yet...