If anything, it offers a counterbalance: you can also communicate with groups of reasonable people not physically proximate to you.
But yes that trend seems to be slowing down, which I'd attribute to the splintering of mass media. Are we actually becoming more divided, or are we just becoming more aware of divisions because we're all more connected?
For a while the rationalist approach was dominant and media channels tended to reflect that ideology.
But with the creation of the 24/7 news cycle a whole new system to leverage the modern media tools that were created.
Eventually in the 1990s this trend came to a head with the creation of Fox news and the rest is frankly history.
But before that, for a short while, it did look like reason was overcoming superstition and ignorance.