Polarization has been the trend in the western world for the last decade, slowly but surely countries are being divided and polirized more and more. It doesn't paint a good picture of the future for sure, and social media is part of the problem unfortunately.
Personally I consider polarization the ultimate in intellectual laziness as a scapegoat. The problem is that people disagree! Not that they any stances are particularly evil or insane, factionalism, zero sum thinking, nor any actual solution in mind. Asking if they have any ideas for a solution just gets a dirty look as you commit the faux pau of actually attempting to get people to think. Instead it is just one word which tries to sound smart but is utterly vapid repeated as nausuem as the source of modern ills. Polarization!
Never mind that lack of it has historically lead to /way worse/ outcomes. Unity is not a good thing in itself.