Subs have their own "reddit" brands in accordance to the topic. They also have their own "reddit" opinions shared among almost every sub with enough people in it for justify propaganda.
I already did my own informal research on this - reddit has transitioned into consumption. I went sub by sub for thousands of posts, even a few years ago, and found that at least 75% of the selection of hobby subs I chose were related to the consumption of products within that hobby, not the active participation and knowledge translation within that hobby. You'd think camping subs would be talking about camping? Sure, see the sidebar for basic info. However, what you'll really see is 80 of the top 100 posts of the day will be pictures of various products within different backgrounds/settings.