The sort of national unity that we took for granted between 1945-1995 (and to some extent from 1920-1945) was explicitly manufactured by mass media. Here technology presented the same content to all people, because it was cheaper to do it that way. Before the invention of consumer radios in 1920, we had a similar political polarization as we do today, if not even moreso. Also the Federal government was significantly weaker, lacking even powers like direct taxation, let alone the mass surveillance it has now.
I'd argue it's not so much a choice by the individual in that the individual often isn't consciously aware and may actually choose to use the same thing without the algorithm that pushes them towards things such as bubbles if that were even a clearly presented option.
Calling it a dumpster fire would be an insult to dumpsters.
Sounds like a personal problem if your friends are going around causing dumpster fires.