How much of an echo chamber is reddit/the internet, really? (opens in new tab)

This post is mostly going to be incoherent rambling, but I hope this does make some sense and gains engagement from my other fellow Tildes users on here. I, like many others, participated in the Reddit exodus to a degree after the API changes some years ago. I've been using tildes semi-regularly ever since, but I still frequent Reddit just as much as I used to (however, being much less active in terms of commenting/posting) simply due to the sheer size of the user base. Of course, since Janua...