Eh. It's always been a part of discourse. If they instead said, "our view of the administration's workings don't even rise to the level of observing shadows projected on a cave wall, we are truly in the dark", I'm betting you would go right along with it, even though there are plenty of people that wouldn't get the reference.
This just happens to be one you didn't know ... And now you do.
It didn't start as an echo chamber. Initially it was one of the few places online a progressive minded person could go and feel like they could express their opinions openly. And by "progressive" I mean both left and right leaning ideologies.
Which, funny enough is now a foreign concept. We call everyone on the left "progressive", even though Biden and Kamala are clearly conservative Democrats. And we call Vance a "conservative" even though he's clearly a progressive Republican.
If you've visited almost any website then Google ads are tracking you. Unless you're a masochist running full lockout, noscript, and eliminate the use of cookies.... Google is following you.