With communication enabling faster communication with greater reach, there might be more noise, but is it worse in terms of percentage of communication?
In the past news sources had a reputation to protect, so crazy stories were confined to tabloids and some radio shows. Now all these stories just pop up in peoples streams, without anything to distinguish them from stories from reliable sources.
Couple that with the fact that, even with trustworthy sources, you can paint an inaccurate picture just by editing which stories you present (which Facebook is incentivised to do and actually does), and I think the problem is much worse now.
Yeah, but they were never shrugged off. Even the worst charlatans insisted they speak the truth; they didn't just go "meh, maybe it's not true after all, what is truth anyway".
Edited to add: /s