Why do you think the reddit hive mind in small hobby subreddits conglomerates on a few devices / items?
Reddit is literally the most shilled platform. Easy botting + the up vote down vote system
Some of the country subreddits I know, /r/France or /r/Belgium, or misc. interests like /r/gardening /r/dwarffortress are definitely not "gamed by marketers". For those that are about topics that are more easy prey to advertising, competent moderation usually works fine.
It's really not that difficult to find interesting and genuine subreddits.