These are made by bots or low paid foreign labor (and probably soon AI if not already) and spammed at places like Reddit/HN for a) karma farming to make account

These are made by bots or low paid foreign labor (and probably soon AI if not already) and spammed at places like Reddit/HN for a) karma farming to make accounts look "legit" for advertising use b) ad view revenue. It's basically the same business model as SEO-ified blogspam.